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Finding the Fourth Proportional to 54,279.60, 81,246.60 and 38,727.60

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Solution

The fourth proportional to 54,279.60, 81,246.60 and 38,727.60 is: 57,968.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,279.60 : 81,246.60 = 38,727.60 : x
  2. Step 2: Convert to fraction form
    54,279.60/81,246.60 = 38,727.60/x
  3. Step 3: Cross multiply
    54,279.60x = 81,246.60 × 38,727.60
  4. Step 4: Simplify right side
    54,279.60x = 3,146,485,826.16
  5. Step 5: Solve for x
    x = 3,146,485,826.16/54,279.60
  6. Step 6: Final answer
    x = 57,968.11

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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.