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Finding the Fourth Proportional to 81,489.83, 122,252.07 and 25,328.59

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Solution

The fourth proportional to 81,489.83, 122,252.07 and 25,328.59 is: 37,998.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,489.83 : 122,252.07 = 25,328.59 : x
  2. Step 2: Convert to fraction form
    81,489.83/122,252.07 = 25,328.59/x
  3. Step 3: Cross multiply
    81,489.83x = 122,252.07 × 25,328.59
  4. Step 4: Simplify right side
    81,489.83x = 3,096,472,557.68
  5. Step 5: Solve for x
    x = 3,096,472,557.68/81,489.83
  6. Step 6: Final answer
    x = 37,998.27

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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.