Home / 81,367.22-122,067.20-28,813.61

Finding the Fourth Proportional to 81,367.22, 122,067.20 and 28,813.61

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Solution

The fourth proportional to 81,367.22, 122,067.20 and 28,813.61 is: 43,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,367.22 : 122,067.20 = 28,813.61 : x
  2. Step 2: Convert to fraction form
    81,367.22/122,067.20 = 28,813.61/x
  3. Step 3: Cross multiply
    81,367.22x = 122,067.20 × 28,813.61
  4. Step 4: Simplify right side
    81,367.22x = 3,517,195,940.19
  5. Step 5: Solve for x
    x = 3,517,195,940.19/81,367.22
  6. Step 6: Final answer
    x = 43,226.21

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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.