Home / 81,180-121,797.72-43,743.96

Finding the Fourth Proportional to 81,180, 121,797.72 and 43,743.96

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Solution

The fourth proportional to 81,180, 121,797.72 and 43,743.96 is: 65,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,180 : 121,797.72 = 43,743.96 : x
  2. Step 2: Convert to fraction form
    81,180/121,797.72 = 43,743.96/x
  3. Step 3: Cross multiply
    81,180x = 121,797.72 × 43,743.96
  4. Step 4: Simplify right side
    81,180x = 5,327,914,591.77
  5. Step 5: Solve for x
    x = 5,327,914,591.77/81,180
  6. Step 6: Final answer
    x = 65,630.88

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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.