Home / 57,721.91-86,591.52-20,275.38

Finding the Fourth Proportional to 57,721.91, 86,591.52 and 20,275.38

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Solution

The fourth proportional to 57,721.91, 86,591.52 and 20,275.38 is: 30,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.91 : 86,591.52 = 20,275.38 : x
  2. Step 2: Convert to fraction form
    57,721.91/86,591.52 = 20,275.38/x
  3. Step 3: Cross multiply
    57,721.91x = 86,591.52 × 20,275.38
  4. Step 4: Simplify right side
    57,721.91x = 1,755,675,972.78
  5. Step 5: Solve for x
    x = 1,755,675,972.78/57,721.91
  6. Step 6: Final answer
    x = 30,416.11

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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.