Finding the Fourth Proportional to 77,102,942.40, 115,654,812.66 and 25,985,404.08
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Solution
The fourth proportional to 77,102,942.40, 115,654,812.66 and 25,985,404.08 is: 38,978,240.61
Step by Step Solution
- Step 1: Write the proportion equation
77,102,942.40 : 115,654,812.66 = 25,985,404.08 : x - Step 2: Convert to fraction form
77,102,942.40/115,654,812.66 = 25,985,404.08/x - Step 3: Cross multiply
77,102,942.40x = 115,654,812.66 × 25,985,404.08 - Step 4: Simplify right side
77,102,942.40x = 3,005,337,040,766,799.50 - Step 5: Solve for x
x = 3,005,337,040,766,799.50/77,102,942.40 - Step 6: Final answer
x = 38,978,240.61
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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.