Home / 81,239.66-121,861.97-22,076.58

Finding the Fourth Proportional to 81,239.66, 121,861.97 and 22,076.58

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Solution

The fourth proportional to 81,239.66, 121,861.97 and 22,076.58 is: 33,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,239.66 : 121,861.97 = 22,076.58 : x
  2. Step 2: Convert to fraction form
    81,239.66/121,861.97 = 22,076.58/x
  3. Step 3: Cross multiply
    81,239.66x = 121,861.97 × 22,076.58
  4. Step 4: Simplify right side
    81,239.66x = 2,690,295,419.28
  5. Step 5: Solve for x
    x = 2,690,295,419.28/81,239.66
  6. Step 6: Final answer
    x = 33,115.54

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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.