Home / 57,854.28-86,781.65-20,393.91

Finding the Fourth Proportional to 57,854.28, 86,781.65 and 20,393.91

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Solution

The fourth proportional to 57,854.28, 86,781.65 and 20,393.91 is: 30,590.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,854.28 : 86,781.65 = 20,393.91 : x
  2. Step 2: Convert to fraction form
    57,854.28/86,781.65 = 20,393.91/x
  3. Step 3: Cross multiply
    57,854.28x = 86,781.65 × 20,393.91
  4. Step 4: Simplify right side
    57,854.28x = 1,769,817,057.78
  5. Step 5: Solve for x
    x = 1,769,817,057.78/57,854.28
  6. Step 6: Final answer
    x = 30,590.94

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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.