Answer:
Sum = 63
Explanation:
3 : 4
It says that the 1st part (3) is 27
27 : x (We've to find the major)
Creating a proportion:
=> 3 : 4 = 27 : x
Product of Means = Product of Extremes
=> 3 * x = 27 * 4
=> 3x = 108
Dividing both sides by 3
=> x = 36
The sum of both is 27+36 = 63