Finding the Fourth Proportional to 81,193,403.52, 121,783,987.14 and 25,859,006.62
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Solution
The fourth proportional to 81,193,403.52, 121,783,987.14 and 25,859,006.62 is: 38,786,561.38
Step by Step Solution
- Step 1: Write the proportion equation
81,193,403.52 : 121,783,987.14 = 25,859,006.62 : x - Step 2: Convert to fraction form
81,193,403.52/121,783,987.14 = 25,859,006.62/x - Step 3: Cross multiply
81,193,403.52x = 121,783,987.14 × 25,859,006.62 - Step 4: Simplify right side
81,193,403.52x = 3,149,212,929,358,795 - Step 5: Solve for x
x = 3,149,212,929,358,795/81,193,403.52 - Step 6: Final answer
x = 38,786,561.38
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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.