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Finding the Fourth Proportional to 55,168.60, 82,787.10 and 28,892.20

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Solution

The fourth proportional to 55,168.60, 82,787.10 and 28,892.20 is: 43,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,168.60 : 82,787.10 = 28,892.20 : x
  2. Step 2: Convert to fraction form
    55,168.60/82,787.10 = 28,892.20/x
  3. Step 3: Cross multiply
    55,168.60x = 82,787.10 × 28,892.20
  4. Step 4: Simplify right side
    55,168.60x = 2,391,901,450.62
  5. Step 5: Solve for x
    x = 2,391,901,450.62/55,168.60
  6. Step 6: Final answer
    x = 43,356.21

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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.