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Finding the Fourth Proportional to 81,886.60, 122,829.90 and 22,722.28

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Solution

The fourth proportional to 81,886.60, 122,829.90 and 22,722.28 is: 34,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.60 : 122,829.90 = 22,722.28 : x
  2. Step 2: Convert to fraction form
    81,886.60/122,829.90 = 22,722.28/x
  3. Step 3: Cross multiply
    81,886.60x = 122,829.90 × 22,722.28
  4. Step 4: Simplify right side
    81,886.60x = 2,790,975,380.17
  5. Step 5: Solve for x
    x = 2,790,975,380.17/81,886.60
  6. Step 6: Final answer
    x = 34,083.42

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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.