Finding the Fourth Proportional to 57,729,143.20, 79,666,232.58 and 31,624,589.05
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Solution
The fourth proportional to 57,729,143.20, 79,666,232.58 and 31,624,589.05 is: 43,641,941.09
Step by Step Solution
- Step 1: Write the proportion equation
57,729,143.20 : 79,666,232.58 = 31,624,589.05 : x - Step 2: Convert to fraction form
57,729,143.20/79,666,232.58 = 31,624,589.05/x - Step 3: Cross multiply
57,729,143.20x = 79,666,232.58 × 31,624,589.05 - Step 4: Simplify right side
57,729,143.20x = 2,519,411,866,504,221.50 - Step 5: Solve for x
x = 2,519,411,866,504,221.50/57,729,143.20 - Step 6: Final answer
x = 43,641,941.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.