Home / 83,438.38-125,165.25-27,278.78

Finding the Fourth Proportional to 83,438.38, 125,165.25 and 27,278.78

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Solution

The fourth proportional to 83,438.38, 125,165.25 and 27,278.78 is: 40,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.38 : 125,165.25 = 27,278.78 : x
  2. Step 2: Convert to fraction form
    83,438.38/125,165.25 = 27,278.78/x
  3. Step 3: Cross multiply
    83,438.38x = 125,165.25 × 27,278.78
  4. Step 4: Simplify right side
    83,438.38x = 3,414,355,631.31
  5. Step 5: Solve for x
    x = 3,414,355,631.31/83,438.38
  6. Step 6: Final answer
    x = 40,920.69

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1.5x scale

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.