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Finding the Fourth Proportional to 81,898.25, 122,790.37 and 36,281.17

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Solution

The fourth proportional to 81,898.25, 122,790.37 and 36,281.17 is: 54,396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,898.25 : 122,790.37 = 36,281.17 : x
  2. Step 2: Convert to fraction form
    81,898.25/122,790.37 = 36,281.17/x
  3. Step 3: Cross multiply
    81,898.25x = 122,790.37 × 36,281.17
  4. Step 4: Simplify right side
    81,898.25x = 4,454,978,351.12
  5. Step 5: Solve for x
    x = 4,454,978,351.12/81,898.25
  6. Step 6: Final answer
    x = 54,396.51

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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.