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Finding the Fourth Proportional to 87,593.78, 120,871.49 and 49,359.56

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Solution

The fourth proportional to 87,593.78, 120,871.49 and 49,359.56 is: 68,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,593.78 : 120,871.49 = 49,359.56 : x
  2. Step 2: Convert to fraction form
    87,593.78/120,871.49 = 49,359.56/x
  3. Step 3: Cross multiply
    87,593.78x = 120,871.49 × 49,359.56
  4. Step 4: Simplify right side
    87,593.78x = 5,966,162,711.79
  5. Step 5: Solve for x
    x = 5,966,162,711.79/87,593.78
  6. Step 6: Final answer
    x = 68,111.71

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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.