Home / 81,481.32-122,180.31-34,083.59

Finding the Fourth Proportional to 81,481.32, 122,180.31 and 34,083.59

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Solution

The fourth proportional to 81,481.32, 122,180.31 and 34,083.59 is: 51,107.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,481.32 : 122,180.31 = 34,083.59 : x
  2. Step 2: Convert to fraction form
    81,481.32/122,180.31 = 34,083.59/x
  3. Step 3: Cross multiply
    81,481.32x = 122,180.31 × 34,083.59
  4. Step 4: Simplify right side
    81,481.32x = 4,164,342,981.21
  5. Step 5: Solve for x
    x = 4,164,342,981.21/81,481.32
  6. Step 6: Final answer
    x = 51,107.95

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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.