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Finding the Fourth Proportional to 83,624.78, 125,436.07 and 20,445.46

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Solution

The fourth proportional to 83,624.78, 125,436.07 and 20,445.46 is: 30,667.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,624.78 : 125,436.07 = 20,445.46 : x
  2. Step 2: Convert to fraction form
    83,624.78/125,436.07 = 20,445.46/x
  3. Step 3: Cross multiply
    83,624.78x = 125,436.07 × 20,445.46
  4. Step 4: Simplify right side
    83,624.78x = 2,564,598,151.74
  5. Step 5: Solve for x
    x = 2,564,598,151.74/83,624.78
  6. Step 6: Final answer
    x = 30,667.92

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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.