Finding the Fourth Proportional to 75,451,747.20, 113,177,620.80 and 72,581,965.80
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Solution
The fourth proportional to 75,451,747.20, 113,177,620.80 and 72,581,965.80 is: 108,872,948.70
Step by Step Solution
- Step 1: Write the proportion equation
75,451,747.20 : 113,177,620.80 = 72,581,965.80 : x - Step 2: Convert to fraction form
75,451,747.20/113,177,620.80 = 72,581,965.80/x - Step 3: Cross multiply
75,451,747.20x = 113,177,620.80 × 72,581,965.80 - Step 4: Simplify right side
75,451,747.20x = 8,214,654,202,230,968 - Step 5: Solve for x
x = 8,214,654,202,230,968/75,451,747.20 - Step 6: Final answer
x = 108,872,948.70
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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.