Home / 83,204.28-124,805.34-20,874.78

Finding the Fourth Proportional to 83,204.28, 124,805.34 and 20,874.78

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Solution

The fourth proportional to 83,204.28, 124,805.34 and 20,874.78 is: 31,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,204.28 : 124,805.34 = 20,874.78 : x
  2. Step 2: Convert to fraction form
    83,204.28/124,805.34 = 20,874.78/x
  3. Step 3: Cross multiply
    83,204.28x = 124,805.34 × 20,874.78
  4. Step 4: Simplify right side
    83,204.28x = 2,605,284,015.33
  5. Step 5: Solve for x
    x = 2,605,284,015.33/83,204.28
  6. Step 6: Final answer
    x = 31,311.90

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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.