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Finding the Fourth Proportional to 60,181.52, 90,212.13 and 20,711.70

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Solution

The fourth proportional to 60,181.52, 90,212.13 and 20,711.70 is: 31,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,181.52 : 90,212.13 = 20,711.70 : x
  2. Step 2: Convert to fraction form
    60,181.52/90,212.13 = 20,711.70/x
  3. Step 3: Cross multiply
    60,181.52x = 90,212.13 × 20,711.70
  4. Step 4: Simplify right side
    60,181.52x = 1,868,446,572.92
  5. Step 5: Solve for x
    x = 1,868,446,572.92/60,181.52
  6. Step 6: Final answer
    x = 31,046.85

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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.