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Finding the Fourth Proportional to 81,558.80, 122,350.38 and 28,963.88

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Solution

The fourth proportional to 81,558.80, 122,350.38 and 28,963.88 is: 43,450.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.80 : 122,350.38 = 28,963.88 : x
  2. Step 2: Convert to fraction form
    81,558.80/122,350.38 = 28,963.88/x
  3. Step 3: Cross multiply
    81,558.80x = 122,350.38 × 28,963.88
  4. Step 4: Simplify right side
    81,558.80x = 3,543,741,724.27
  5. Step 5: Solve for x
    x = 3,543,741,724.27/81,558.80
  6. Step 6: Final answer
    x = 43,450.15

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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.