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Finding the Fourth Proportional to 81,399.60, 122,082.94 and 22,230.36

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Solution

The fourth proportional to 81,399.60, 122,082.94 and 22,230.36 is: 33,341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.60 : 122,082.94 = 22,230.36 : x
  2. Step 2: Convert to fraction form
    81,399.60/122,082.94 = 22,230.36/x
  3. Step 3: Cross multiply
    81,399.60x = 122,082.94 × 22,230.36
  4. Step 4: Simplify right side
    81,399.60x = 2,713,947,706.06
  5. Step 5: Solve for x
    x = 2,713,947,706.06/81,399.60
  6. Step 6: Final answer
    x = 33,341.04

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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.