Finding the Fourth Proportional to 77,092,972.20, 106,412,124.26 and 49,590,900.45
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Solution
The fourth proportional to 77,092,972.20, 106,412,124.26 and 49,590,900.45 is: 68,450,766.79
Step by Step Solution
- Step 1: Write the proportion equation
77,092,972.20 : 106,412,124.26 = 49,590,900.45 : x - Step 2: Convert to fraction form
77,092,972.20/106,412,124.26 = 49,590,900.45/x - Step 3: Cross multiply
77,092,972.20x = 106,412,124.26 × 49,590,900.45 - Step 4: Simplify right side
77,092,972.20x = 5,277,073,060,974,668 - Step 5: Solve for x
x = 5,277,073,060,974,668/77,092,972.20 - Step 6: Final answer
x = 68,450,766.79
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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.