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Finding the Fourth Proportional to 83,654.76, 125,481.38 and 20,475.15

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Solution

The fourth proportional to 83,654.76, 125,481.38 and 20,475.15 is: 30,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,654.76 : 125,481.38 = 20,475.15 : x
  2. Step 2: Convert to fraction form
    83,654.76/125,481.38 = 20,475.15/x
  3. Step 3: Cross multiply
    83,654.76x = 125,481.38 × 20,475.15
  4. Step 4: Simplify right side
    83,654.76x = 2,569,249,975.33
  5. Step 5: Solve for x
    x = 2,569,249,975.33/83,654.76
  6. Step 6: Final answer
    x = 30,712.54

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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.