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Finding the Fourth Proportional to 81,671.65, 122,508.09 and 22,510.55

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Solution

The fourth proportional to 81,671.65, 122,508.09 and 22,510.55 is: 33,766.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,671.65 : 122,508.09 = 22,510.55 : x
  2. Step 2: Convert to fraction form
    81,671.65/122,508.09 = 22,510.55/x
  3. Step 3: Cross multiply
    81,671.65x = 122,508.09 × 22,510.55
  4. Step 4: Simplify right side
    81,671.65x = 2,757,724,791.62
  5. Step 5: Solve for x
    x = 2,757,724,791.62/81,671.65
  6. Step 6: Final answer
    x = 33,766.00

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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.