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Finding the Fourth Proportional to 81,472.43, 122,208.75 and 22,308.61

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Solution

The fourth proportional to 81,472.43, 122,208.75 and 22,308.61 is: 33,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,472.43 : 122,208.75 = 22,308.61 : x
  2. Step 2: Convert to fraction form
    81,472.43/122,208.75 = 22,308.61/x
  3. Step 3: Cross multiply
    81,472.43x = 122,208.75 × 22,308.61
  4. Step 4: Simplify right side
    81,472.43x = 2,726,307,230.79
  5. Step 5: Solve for x
    x = 2,726,307,230.79/81,472.43
  6. Step 6: Final answer
    x = 33,462.94

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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.