Home / 81,679.19-122,535.80-25,517.03

Finding the Fourth Proportional to 81,679.19, 122,535.80 and 25,517.03

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Solution

The fourth proportional to 81,679.19, 122,535.80 and 25,517.03 is: 38,280.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.19 : 122,535.80 = 25,517.03 : x
  2. Step 2: Convert to fraction form
    81,679.19/122,535.80 = 25,517.03/x
  3. Step 3: Cross multiply
    81,679.19x = 122,535.80 × 25,517.03
  4. Step 4: Simplify right side
    81,679.19x = 3,126,749,403.92
  5. Step 5: Solve for x
    x = 3,126,749,403.92/81,679.19
  6. Step 6: Final answer
    x = 38,280.86

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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.