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Finding the Fourth Proportional to 81,924.82, 122,787.60 and 44,395.90

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Solution

The fourth proportional to 81,924.82, 122,787.60 and 44,395.90 is: 66,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,924.82 : 122,787.60 = 44,395.90 : x
  2. Step 2: Convert to fraction form
    81,924.82/122,787.60 = 44,395.90/x
  3. Step 3: Cross multiply
    81,924.82x = 122,787.60 × 44,395.90
  4. Step 4: Simplify right side
    81,924.82x = 5,451,265,537.39
  5. Step 5: Solve for x
    x = 5,451,265,537.39/81,924.82
  6. Step 6: Final answer
    x = 66,539.86

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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.