Home / 83,728.80-125,593.20-21,399.30

Finding the Fourth Proportional to 83,728.80, 125,593.20 and 21,399.30

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Solution

The fourth proportional to 83,728.80, 125,593.20 and 21,399.30 is: 32,098.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,728.80 : 125,593.20 = 21,399.30 : x
  2. Step 2: Convert to fraction form
    83,728.80/125,593.20 = 21,399.30/x
  3. Step 3: Cross multiply
    83,728.80x = 125,593.20 × 21,399.30
  4. Step 4: Simplify right side
    83,728.80x = 2,687,606,564.76
  5. Step 5: Solve for x
    x = 2,687,606,564.76/83,728.80
  6. Step 6: Final answer
    x = 32,098.95

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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.