Least Common Multiple of 81/91, 42/49, 45/54, 43/672

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 81/91, 42/49, 45/54, 43/672 quickly i.e. 243810 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 81/91, 42/49, 45/54, 43/672 is 243810.

LCM(81/91, 42/49, 45/54, 43/672) = 243810

LCM of 81/91, 42/49, 45/54, 43/672

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

LCM of:

Least Common Multiple of 81/91,42/49,45/54,43/672

Given numbers are 81/91,42/49,45/54,43/672

Formula to find LCM of Fractions is

LCM = LCM of Numerators/GCF of Denominators

As per the formula LCM of Fractions let’s split into two parts and find the LCM of Numerators and GCF of Denominators

In the given fractions LCM of Numerators means LCM of 81,42,45,43

Least Common Multiple of Numerators i.e. LCM of 81,42,45,43 is 243810.

GCF of Denominators means GCF of 91,49,54,672 as per the given fractions.

GCF of 91,49,54,672 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 81,42,45,43

LCM of Fractions 81/91,42/49,45/54,43/672 is 243810

3 81, 42, 45, 43
3 27, 14, 15, 43
9, 14, 5, 43

∴ So the LCM of the given numbers is 3 x 3 x 9 x 14 x 5 x 43 = 243810

Least Common Multiple of 81,42,45,43 with GCF Formula

Least Common Multiple of 81,42,45,43 with GCF Formula

The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 81,42,45,43 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(81,42,45,43) = 1

common factors(in case of two or more numbers have common factors) = 27

GCF(81,42,45,43) x common factors =1 x 27 = 27

LCM(81,42,45,43) = ( 81 × 42 × 45 × 43 ) / 27

LCM(81,42,45,43) = 6582870 / 27

LCM(81,42,45,43) = 243810


Lets's calculate GCF of 91,49,54,672

∴ So GCF of numbers is 1 because of no common factors present between them.

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 243810/1

Therefore the LCM of Fractions 81/91,42/49,45/54,43/672 is 243810

Greatest Common Factor of 91,49,54,672 By Matching Biggest Common Factor Method

Greatest Common Factor of 91,49,54,672 By Matching Biggest Common Factor Method

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

1,2,3,6,9,18,27,54

Factors of 672

List of positive integer factors of 672 that divides 672 without a remainder.

1,2,3,4,6,7,8,12,14,16,21,24,28,32,42,48,56,84,96,112,168,224,336,672

Greatest Common Factor

We found the factors 91,49,54,672 . The biggest common factor number is the GCF number.
So the greatest common factor 91,49,54,672 is 1.


LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

Frequently Asked Questions on Fractional LCM of 81/91, 42/49, 45/54, 43/672

1. How to find LCM in Fractions?

Answer: LCM of fractions can be found using the simple formula LCM of Fractions = LCM of Numerators/GCF of Denominators.

2. What is the LCM of Fractions for 81/91, 42/49, 45/54, 43/672?

Answer: LCM of Numerators as per given numbers 81/91, 42/49, 45/54, 43/672 is

LCM of Numerators i.e. for 81,42,45,43 is 243810

GCF of denominators i.e. for 91,49,54,672 is 1.

Thus, LCM of Fractions is 243810.Finally, LCM of Fractions for 81/91, 42/49, 45/54, 43/672 is 243810.