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Finding the Fourth Proportional to 81,396.60, 122,078.44 and 22,227.36

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Solution

The fourth proportional to 81,396.60, 122,078.44 and 22,227.36 is: 33,336.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,396.60 : 122,078.44 = 22,227.36 : x
  2. Step 2: Convert to fraction form
    81,396.60/122,078.44 = 22,227.36/x
  3. Step 3: Cross multiply
    81,396.60x = 122,078.44 × 22,227.36
  4. Step 4: Simplify right side
    81,396.60x = 2,713,481,434.12
  5. Step 5: Solve for x
    x = 2,713,481,434.12/81,396.60
  6. Step 6: Final answer
    x = 33,336.55

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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.