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Finding the Fourth Proportional to 54,502.60, 81,753.90 and 47,115.40

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Solution

The fourth proportional to 54,502.60, 81,753.90 and 47,115.40 is: 70,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,502.60 : 81,753.90 = 47,115.40 : x
  2. Step 2: Convert to fraction form
    54,502.60/81,753.90 = 47,115.40/x
  3. Step 3: Cross multiply
    54,502.60x = 81,753.90 × 47,115.40
  4. Step 4: Simplify right side
    54,502.60x = 3,851,867,700.06
  5. Step 5: Solve for x
    x = 3,851,867,700.06/54,502.60
  6. Step 6: Final answer
    x = 70,673.10

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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.