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Finding the Fourth Proportional to 81,283.01, 121,912.19 and 22,123.29

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Solution

The fourth proportional to 81,283.01, 121,912.19 and 22,123.29 is: 33,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.01 : 121,912.19 = 22,123.29 : x
  2. Step 2: Convert to fraction form
    81,283.01/121,912.19 = 22,123.29/x
  3. Step 3: Cross multiply
    81,283.01x = 121,912.19 × 22,123.29
  4. Step 4: Simplify right side
    81,283.01x = 2,697,098,733.91
  5. Step 5: Solve for x
    x = 2,697,098,733.91/81,283.01
  6. Step 6: Final answer
    x = 33,181.58

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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.