Home / 81,679.32-122,535.98-25,517.16

Finding the Fourth Proportional to 81,679.32, 122,535.98 and 25,517.16

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Solution

The fourth proportional to 81,679.32, 122,535.98 and 25,517.16 is: 38,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.32 : 122,535.98 = 25,517.16 : x
  2. Step 2: Convert to fraction form
    81,679.32/122,535.98 = 25,517.16/x
  3. Step 3: Cross multiply
    81,679.32x = 122,535.98 × 25,517.16
  4. Step 4: Simplify right side
    81,679.32x = 3,126,769,594.74
  5. Step 5: Solve for x
    x = 3,126,769,594.74/81,679.32
  6. Step 6: Final answer
    x = 38,281.05

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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.