Finding the Fourth Proportional to 76,979.60, 115,472.60 and 24,387.92
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Solution
The fourth proportional to 76,979.60, 115,472.60 and 24,387.92 is: 36,582.89
Step by Step Solution
- Step 1: Write the proportion equation
76,979.60 : 115,472.60 = 24,387.92 : x - Step 2: Convert to fraction form
76,979.60/115,472.60 = 24,387.92/x - Step 3: Cross multiply
76,979.60x = 115,472.60 × 24,387.92 - Step 4: Simplify right side
76,979.60x = 2,816,136,530.99 - Step 5: Solve for x
x = 2,816,136,530.99/76,979.60 - Step 6: Final answer
x = 36,582.89
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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.