Least Common Multiple of 77/28, 45/24, 56/47, 21/43

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 77/28, 45/24, 56/47, 21/43 quickly i.e. 27720 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 77/28, 45/24, 56/47, 21/43 is 27720.

LCM(77/28, 45/24, 56/47, 21/43) = 27720

LCM of 77/28, 45/24, 56/47, 21/43

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 77/28,45/24,56/47,21/43

Given numbers are 77/28,45/24,56/47,21/43

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 77,45,56,21

Least Common Multiple of Numerators i.e. LCM of 77,45,56,21 is 27720.

GCF of Denominators means GCF of 28,24,47,43 as per the given fractions.

GCF of 28,24,47,43 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 77,45,56,21

LCM of Fractions 77/28,45/24,56/47,21/43 is 27720

3 77, 45, 56, 21
7 77, 15, 56, 7
11, 15, 8, 1

∴ So the LCM of the given numbers is 3 x 7 x 11 x 15 x 8 x 1 = 27720

Least Common Multiple of 77,45,56,21 with GCF Formula

Least Common Multiple of 77,45,56,21 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 77,45,56,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(77,45,56,21) = 1

common factors(in case of two or more numbers have common factors) = 147

GCF(77,45,56,21) x common factors =1 x 147 = 147

LCM(77,45,56,21) = ( 77 × 45 × 56 × 21 ) / 147

LCM(77,45,56,21) = 4074840 / 147

LCM(77,45,56,21) = 27720


Lets's calculate GCF of 28,24,47,43

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 27720/1

Therefore the LCM of Fractions 77/28,45/24,56/47,21/43 is 27720

Greatest Common Factor of 28,24,47,43 By Matching Biggest Common Factor Method

Greatest Common Factor of 28,24,47,43 By Matching Biggest Common Factor Method

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Greatest Common Factor

We found the factors 28,24,47,43 . The biggest common factor number is the GCF number.
So the greatest common factor 28,24,47,43 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 77/28, 45/24, 56/47, 21/43

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 77/28, 45/24, 56/47, 21/43?

Answer: LCM of Numerators as per given numbers 77/28, 45/24, 56/47, 21/43 is

LCM of Numerators i.e. for 77,45,56,21 is 27720

GCF of denominators i.e. for 28,24,47,43 is 1.

Thus, LCM of Fractions is 27720.Finally, LCM of Fractions for 77/28, 45/24, 56/47, 21/43 is 27720.