Home / 81,331.90-121,984.01-22,153.73

Finding the Fourth Proportional to 81,331.90, 121,984.01 and 22,153.73

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Solution

The fourth proportional to 81,331.90, 121,984.01 and 22,153.73 is: 33,226.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.90 : 121,984.01 = 22,153.73 : x
  2. Step 2: Convert to fraction form
    81,331.90/121,984.01 = 22,153.73/x
  3. Step 3: Cross multiply
    81,331.90x = 121,984.01 × 22,153.73
  4. Step 4: Simplify right side
    81,331.90x = 2,702,400,101.17
  5. Step 5: Solve for x
    x = 2,702,400,101.17/81,331.90
  6. Step 6: Final answer
    x = 33,226.82

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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.