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Finding the Fourth Proportional to 81,532.80, 122,286.09 and 22,354.74

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Solution

The fourth proportional to 81,532.80, 122,286.09 and 22,354.74 is: 33,528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.80 : 122,286.09 = 22,354.74 : x
  2. Step 2: Convert to fraction form
    81,532.80/122,286.09 = 22,354.74/x
  3. Step 3: Cross multiply
    81,532.80x = 122,286.09 × 22,354.74
  4. Step 4: Simplify right side
    81,532.80x = 2,733,673,747.57
  5. Step 5: Solve for x
    x = 2,733,673,747.57/81,532.80
  6. Step 6: Final answer
    x = 33,528.52

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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.