Home / 81,679.57-122,536.36-25,517.41

Finding the Fourth Proportional to 81,679.57, 122,536.36 and 25,517.41

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Solution

The fourth proportional to 81,679.57, 122,536.36 and 25,517.41 is: 38,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.57 : 122,536.36 = 25,517.41 : x
  2. Step 2: Convert to fraction form
    81,679.57/122,536.36 = 25,517.41/x
  3. Step 3: Cross multiply
    81,679.57x = 122,536.36 × 25,517.41
  4. Step 4: Simplify right side
    81,679.57x = 3,126,810,167.89
  5. Step 5: Solve for x
    x = 3,126,810,167.89/81,679.57
  6. Step 6: Final answer
    x = 38,281.42

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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.