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Finding the Fourth Proportional to 71,412.87, 98,481.78 and 42,727.94

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Solution

The fourth proportional to 71,412.87, 98,481.78 and 42,727.94 is: 58,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,412.87 : 98,481.78 = 42,727.94 : x
  2. Step 2: Convert to fraction form
    71,412.87/98,481.78 = 42,727.94/x
  3. Step 3: Cross multiply
    71,412.87x = 98,481.78 × 42,727.94
  4. Step 4: Simplify right side
    71,412.87x = 4,207,923,094.52
  5. Step 5: Solve for x
    x = 4,207,923,094.52/71,412.87
  6. Step 6: Final answer
    x = 58,923.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.