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Finding the Fourth Proportional to 87,412.99, 131,034.42 and 55,724.17

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Solution

The fourth proportional to 87,412.99, 131,034.42 and 55,724.17 is: 83,532.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,412.99 : 131,034.42 = 55,724.17 : x
  2. Step 2: Convert to fraction form
    87,412.99/131,034.42 = 55,724.17/x
  3. Step 3: Cross multiply
    87,412.99x = 131,034.42 × 55,724.17
  4. Step 4: Simplify right side
    87,412.99x = 7,301,784,295.93
  5. Step 5: Solve for x
    x = 7,301,784,295.93/87,412.99
  6. Step 6: Final answer
    x = 83,532.03

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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.