Finding the Fourth Proportional to 87,691.68, 121,011.84 and 49,964.04
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Solution
The fourth proportional to 87,691.68, 121,011.84 and 49,964.04 is: 68,948.85
Step by Step Solution
- Step 1: Write the proportion equation
87,691.68 : 121,011.84 = 49,964.04 : x - Step 2: Convert to fraction form
87,691.68/121,011.84 = 49,964.04/x - Step 3: Cross multiply
87,691.68x = 121,011.84 × 49,964.04 - Step 4: Simplify right side
87,691.68x = 6,046,240,414.23 - Step 5: Solve for x
x = 6,046,240,414.23/87,691.68 - Step 6: Final answer
x = 68,948.85
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1.5x scale
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.