Home / 57,931.92-86,843.72-20,471.04

Finding the Fourth Proportional to 57,931.92, 86,843.72 and 20,471.04

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Solution

The fourth proportional to 57,931.92, 86,843.72 and 20,471.04 is: 30,687.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,931.92 : 86,843.72 = 20,471.04 : x
  2. Step 2: Convert to fraction form
    57,931.92/86,843.72 = 20,471.04/x
  3. Step 3: Cross multiply
    57,931.92x = 86,843.72 × 20,471.04
  4. Step 4: Simplify right side
    57,931.92x = 1,777,781,265.87
  5. Step 5: Solve for x
    x = 1,777,781,265.87/57,931.92
  6. Step 6: Final answer
    x = 30,687.42

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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.