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Finding the Fourth Proportional to 54,282.60, 81,251.10 and 38,730.60

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Solution

The fourth proportional to 54,282.60, 81,251.10 and 38,730.60 is: 57,972.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,282.60 : 81,251.10 = 38,730.60 : x
  2. Step 2: Convert to fraction form
    54,282.60/81,251.10 = 38,730.60/x
  3. Step 3: Cross multiply
    54,282.60x = 81,251.10 × 38,730.60
  4. Step 4: Simplify right side
    54,282.60x = 3,146,903,853.66
  5. Step 5: Solve for x
    x = 3,146,903,853.66/54,282.60
  6. Step 6: Final answer
    x = 57,972.61

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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.