Home / 81,249.42-121,876.62-22,086.36

Finding the Fourth Proportional to 81,249.42, 121,876.62 and 22,086.36

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Solution

The fourth proportional to 81,249.42, 121,876.62 and 22,086.36 is: 33,130.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.42 : 121,876.62 = 22,086.36 : x
  2. Step 2: Convert to fraction form
    81,249.42/121,876.62 = 22,086.36/x
  3. Step 3: Cross multiply
    81,249.42x = 121,876.62 × 22,086.36
  4. Step 4: Simplify right side
    81,249.42x = 2,691,810,904.90
  5. Step 5: Solve for x
    x = 2,691,810,904.90/81,249.42
  6. Step 6: Final answer
    x = 33,130.22

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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.