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Finding the Fourth Proportional to 54,505.60, 81,810.60 and 28,229.20

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Solution

The fourth proportional to 54,505.60, 81,810.60 and 28,229.20 is: 42,370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,505.60 : 81,810.60 = 28,229.20 : x
  2. Step 2: Convert to fraction form
    54,505.60/81,810.60 = 28,229.20/x
  3. Step 3: Cross multiply
    54,505.60x = 81,810.60 × 28,229.20
  4. Step 4: Simplify right side
    54,505.60x = 2,309,447,789.52
  5. Step 5: Solve for x
    x = 2,309,447,789.52/54,505.60
  6. Step 6: Final answer
    x = 42,370.84

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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.