Finding the Fourth Proportional to 81,192,131.97, 121,782,073.53 and 25,857,730.80
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Solution
The fourth proportional to 81,192,131.97, 121,782,073.53 and 25,857,730.80 is: 38,784,645.72
Step by Step Solution
- Step 1: Write the proportion equation
81,192,131.97 : 121,782,073.53 = 25,857,730.80 : x - Step 2: Convert to fraction form
81,192,131.97/121,782,073.53 = 25,857,730.80/x - Step 3: Cross multiply
81,192,131.97x = 121,782,073.53 × 25,857,730.80 - Step 4: Simplify right side
81,192,131.97x = 3,149,008,073,604,546 - Step 5: Solve for x
x = 3,149,008,073,604,546/81,192,131.97 - Step 6: Final answer
x = 38,784,645.72
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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.