Home / 81,426.42-122,139.75-22,262.61

Finding the Fourth Proportional to 81,426.42, 122,139.75 and 22,262.61

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Solution

The fourth proportional to 81,426.42, 122,139.75 and 22,262.61 is: 33,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,426.42 : 122,139.75 = 22,262.61 : x
  2. Step 2: Convert to fraction form
    81,426.42/122,139.75 = 22,262.61/x
  3. Step 3: Cross multiply
    81,426.42x = 122,139.75 × 22,262.61
  4. Step 4: Simplify right side
    81,426.42x = 2,719,149,619.75
  5. Step 5: Solve for x
    x = 2,719,149,619.75/81,426.42
  6. Step 6: Final answer
    x = 33,393.95

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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.