Finding the Fourth Proportional to 75,555,711.40, 113,361,560.70 and 72,756,351.40
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Solution
The fourth proportional to 75,555,711.40, 113,361,560.70 and 72,756,351.40 is: 109,161,483.53
Step by Step Solution
- Step 1: Write the proportion equation
75,555,711.40 : 113,361,560.70 = 72,756,351.40 : x - Step 2: Convert to fraction form
75,555,711.40/113,361,560.70 = 72,756,351.40/x - Step 3: Cross multiply
75,555,711.40x = 113,361,560.70 × 72,756,351.40 - Step 4: Simplify right side
75,555,711.40x = 8,247,773,545,541,631 - Step 5: Solve for x
x = 8,247,773,545,541,631/75,555,711.40 - Step 6: Final answer
x = 109,161,483.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.