Home / 83,747.38-125,625.39-21,418.42

Finding the Fourth Proportional to 83,747.38, 125,625.39 and 21,418.42

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Solution

The fourth proportional to 83,747.38, 125,625.39 and 21,418.42 is: 32,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,747.38 : 125,625.39 = 21,418.42 : x
  2. Step 2: Convert to fraction form
    83,747.38/125,625.39 = 21,418.42/x
  3. Step 3: Cross multiply
    83,747.38x = 125,625.39 × 21,418.42
  4. Step 4: Simplify right side
    83,747.38x = 2,690,697,365.68
  5. Step 5: Solve for x
    x = 2,690,697,365.68/83,747.38
  6. Step 6: Final answer
    x = 32,128.73

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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.