Finding the Fourth Proportional to 80,864.97, 121,112.92 and 71,404.84
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Solution
The fourth proportional to 80,864.97, 121,112.92 and 71,404.84 is: 106,944.32
Step by Step Solution
- Step 1: Write the proportion equation
80,864.97 : 121,112.92 = 71,404.84 : x - Step 2: Convert to fraction form
80,864.97/121,112.92 = 71,404.84/x - Step 3: Cross multiply
80,864.97x = 121,112.92 × 71,404.84 - Step 4: Simplify right side
80,864.97x = 8,648,048,915.18 - Step 5: Solve for x
x = 8,648,048,915.18/80,864.97 - Step 6: Final answer
x = 106,944.32
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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.