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Finding the Fourth Proportional to 60,074.53, 90,125.46 and 31,979.78

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Solution

The fourth proportional to 60,074.53, 90,125.46 and 31,979.78 is: 47,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,074.53 : 90,125.46 = 31,979.78 : x
  2. Step 2: Convert to fraction form
    60,074.53/90,125.46 = 31,979.78/x
  3. Step 3: Cross multiply
    60,074.53x = 90,125.46 × 31,979.78
  4. Step 4: Simplify right side
    60,074.53x = 2,882,192,270.54
  5. Step 5: Solve for x
    x = 2,882,192,270.54/60,074.53
  6. Step 6: Final answer
    x = 47,976.94

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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.