Home / 81,405.20-122,114.52-22,241.36

Finding the Fourth Proportional to 81,405.20, 122,114.52 and 22,241.36

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Solution

The fourth proportional to 81,405.20, 122,114.52 and 22,241.36 is: 33,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,405.20 : 122,114.52 = 22,241.36 : x
  2. Step 2: Convert to fraction form
    81,405.20/122,114.52 = 22,241.36/x
  3. Step 3: Cross multiply
    81,405.20x = 122,114.52 × 22,241.36
  4. Step 4: Simplify right side
    81,405.20x = 2,715,993,000.55
  5. Step 5: Solve for x
    x = 2,715,993,000.55/81,405.20
  6. Step 6: Final answer
    x = 33,363.88

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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.