Home / 81,331.38-121,984.52-22,171.82

Finding the Fourth Proportional to 81,331.38, 121,984.52 and 22,171.82

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Solution

The fourth proportional to 81,331.38, 121,984.52 and 22,171.82 is: 33,254.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.38 : 121,984.52 = 22,171.82 : x
  2. Step 2: Convert to fraction form
    81,331.38/121,984.52 = 22,171.82/x
  3. Step 3: Cross multiply
    81,331.38x = 121,984.52 × 22,171.82
  4. Step 4: Simplify right side
    81,331.38x = 2,704,618,820.23
  5. Step 5: Solve for x
    x = 2,704,618,820.23/81,331.38
  6. Step 6: Final answer
    x = 33,254.31

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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.