Home / 81,419.82-122,120.01-22,260.66

Finding the Fourth Proportional to 81,419.82, 122,120.01 and 22,260.66

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Solution

The fourth proportional to 81,419.82, 122,120.01 and 22,260.66 is: 33,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,419.82 : 122,120.01 = 22,260.66 : x
  2. Step 2: Convert to fraction form
    81,419.82/122,120.01 = 22,260.66/x
  3. Step 3: Cross multiply
    81,419.82x = 122,120.01 × 22,260.66
  4. Step 4: Simplify right side
    81,419.82x = 2,718,472,021.81
  5. Step 5: Solve for x
    x = 2,718,472,021.81/81,419.82
  6. Step 6: Final answer
    x = 33,388.33

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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.