Least Common Multiple of 78/31, 55/80, 19/56

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 78/31, 55/80, 19/56 quickly i.e. 81510 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 78/31, 55/80, 19/56 is 81510.

LCM(78/31, 55/80, 19/56) = 81510

LCM of 78/31, 55/80, 19/56

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 78/31,55/80,19/56

Given numbers are 78/31,55/80,19/56

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 78,55,19

Least Common Multiple of Numerators i.e. LCM of 78,55,19 is 81510.

GCF of Denominators means GCF of 31,80,56 as per the given fractions.

GCF of 31,80,56 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 78,55,19

LCM of Fractions 78/31,55/80,19/56 is 81510

Given numbers has no common factors except 1. So, there LCM is their product i.e 81510

Least Common Multiple of 78,55,19 with GCF Formula

Least Common Multiple of 78,55,19 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 78,55,19 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(78,55,19) = 1

common factors(in case of two or more numbers have common factors) = 1

GCF(78,55,19) x common factors =1 x 1 = 1

LCM(78,55,19) = ( 78 × 55 × 19 ) / 1

LCM(78,55,19) = 81510 / 1

LCM(78,55,19) = 81510


Lets's calculate GCF of 31,80,56

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 81510/1

Therefore the LCM of Fractions 78/31,55/80,19/56 is 81510

Greatest Common Factor of 31,80,56 By Matching Biggest Common Factor Method

Greatest Common Factor of 31,80,56 By Matching Biggest Common Factor Method

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Greatest Common Factor

We found the factors 31,80,56 . The biggest common factor number is the GCF number.
So the greatest common factor 31,80,56 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 78/31, 55/80, 19/56

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 78/31, 55/80, 19/56?

Answer: LCM of Numerators as per given numbers 78/31, 55/80, 19/56 is

LCM of Numerators i.e. for 78,55,19 is 81510

GCF of denominators i.e. for 31,80,56 is 1.

Thus, LCM of Fractions is 81510.Finally, LCM of Fractions for 78/31, 55/80, 19/56 is 81510.