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Finding the Fourth Proportional to 80,912, 121,388.48 and 22,544

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Solution

The fourth proportional to 80,912, 121,388.48 and 22,544 is: 33,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,912 : 121,388.48 = 22,544 : x
  2. Step 2: Convert to fraction form
    80,912/121,388.48 = 22,544/x
  3. Step 3: Cross multiply
    80,912x = 121,388.48 × 22,544
  4. Step 4: Simplify right side
    80,912x = 2,736,581,893.12
  5. Step 5: Solve for x
    x = 2,736,581,893.12/80,912
  6. Step 6: Final answer
    x = 33,821.71

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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.