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Finding the Fourth Proportional to 83,481.46, 125,220.43 and 20,301.92

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Solution

The fourth proportional to 83,481.46, 125,220.43 and 20,301.92 is: 30,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,481.46 : 125,220.43 = 20,301.92 : x
  2. Step 2: Convert to fraction form
    83,481.46/125,220.43 = 20,301.92/x
  3. Step 3: Cross multiply
    83,481.46x = 125,220.43 × 20,301.92
  4. Step 4: Simplify right side
    83,481.46x = 2,542,215,021.08
  5. Step 5: Solve for x
    x = 2,542,215,021.08/83,481.46
  6. Step 6: Final answer
    x = 30,452.45

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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.