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Finding the Fourth Proportional to 54,414.60, 81,621.90 and 36,699.90

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Solution

The fourth proportional to 54,414.60, 81,621.90 and 36,699.90 is: 55,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,414.60 : 81,621.90 = 36,699.90 : x
  2. Step 2: Convert to fraction form
    54,414.60/81,621.90 = 36,699.90/x
  3. Step 3: Cross multiply
    54,414.60x = 81,621.90 × 36,699.90
  4. Step 4: Simplify right side
    54,414.60x = 2,995,515,567.81
  5. Step 5: Solve for x
    x = 2,995,515,567.81/54,414.60
  6. Step 6: Final answer
    x = 55,049.85

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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.