Greatest Common Factor of 72/61, 31/81, 65/21, 91/185

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 72/61, 31/81, 65/21, 91/185

Enter two or more fractions separated by "commas"

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

GCF of:

Greatest Common Factor of 72/61,31/81,65/21,91/185

Given fractions are 72/61,31/81,65/21,91/185

Formula to find GCF of Fractions is

GCF = GCF of Numerators/LCM of Denominators

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

In the given fractions GCF of Numerators means GCF of 72,31,65,91

Greatest Common Factor of Numerators i.e. GCF of 72,31,65,91 is 1 .

LCM of Denominators means LCM of 61,81,21,185 as per the given fractions.

LCM of 61,81,21,185 is 6398595 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 72,31,65,91

GCF of Fractions 72/61,31/81,65/21,91/185 is 1/6398595

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

Greatest Common Factor of 72,31,65,91 By Matching Biggest Common Factor Method

Greatest Common Factor of 72,31,65,91 By Matching Biggest Common Factor Method

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 31

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

1,31

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 91

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

1,7,13,91

Greatest Common Factor

We found the factors 72,31,65,91 . The biggest common factor number is the GCF number.
So the greatest common factor 72,31,65,91 is 1.

Lets's calculate LCM of 61,81,21,185

3 61, 81, 21, 185
61, 27, 7, 185

∴ So the LCM of the given numbers is 3 x 61 x 27 x 7 x 185 = 6398595

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/6398595

Therefore, the GCF of Fractions 72/61,31/81,65/21,91/185 is 1/6398595

Least Common Multiple of 61,81,21,185 with GCF Formula

Least Common Multiple of 61,81,21,185 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 61,81,21,185 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(61,81,21,185) = 1

common factors(in case of two or more numbers have common factors) = 3

GCF(61,81,21,185) x common factors =1 x 3 = 3

LCM(61,81,21,185) = ( 61 × 81 × 21 × 185 ) / 3

LCM(61,81,21,185) = 19195785 / 3

LCM(61,81,21,185) = 6398595


GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

Frequently Asked Questions on Fractional GCF of 72/61, 31/81, 65/21, 91/185

1. How to find GCF in Fractions?

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

2. What is the GCF of Fractions for 72/61, 31/81, 65/21, 91/185?

Answer: GCF of Numerators as per given numbers 72/61, 31/81, 65/21, 91/185 is

GCF of Numerators i.e. for 72,31,65,91 is 1

LCM of denominators i.e. for 61,81,21,185 is 6398595.

Thus, GCF of Fractions is 1/6398595.Finally, GCF of Fractions for 72/61, 31/81, 65/21, 91/185 is 1/6398595.