Finding the Fourth Proportional to 86,421.97, 129,616.54 and 27,241.75
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Solution
The fourth proportional to 86,421.97, 129,616.54 and 27,241.75 is: 40,857.45
Step by Step Solution
- Step 1: Write the proportion equation
86,421.97 : 129,616.54 = 27,241.75 : x - Step 2: Convert to fraction form
86,421.97/129,616.54 = 27,241.75/x - Step 3: Cross multiply
86,421.97x = 129,616.54 × 27,241.75 - Step 4: Simplify right side
86,421.97x = 3,530,981,472.46 - Step 5: Solve for x
x = 3,530,981,472.46/86,421.97 - Step 6: Final answer
x = 40,857.45
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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.