Home / 81,436.62-122,153.20-22,272.29

Finding the Fourth Proportional to 81,436.62, 122,153.20 and 22,272.29

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Solution

The fourth proportional to 81,436.62, 122,153.20 and 22,272.29 is: 33,407.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,436.62 : 122,153.20 = 22,272.29 : x
  2. Step 2: Convert to fraction form
    81,436.62/122,153.20 = 22,272.29/x
  3. Step 3: Cross multiply
    81,436.62x = 122,153.20 × 22,272.29
  4. Step 4: Simplify right side
    81,436.62x = 2,720,631,494.83
  5. Step 5: Solve for x
    x = 2,720,631,494.83/81,436.62
  6. Step 6: Final answer
    x = 33,407.96

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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.