Home / 81,247.25-121,923.50-43,833.15

Finding the Fourth Proportional to 81,247.25, 121,923.50 and 43,833.15

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Solution

The fourth proportional to 81,247.25, 121,923.50 and 43,833.15 is: 65,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,247.25 : 121,923.50 = 43,833.15 : x
  2. Step 2: Convert to fraction form
    81,247.25/121,923.50 = 43,833.15/x
  3. Step 3: Cross multiply
    81,247.25x = 121,923.50 × 43,833.15
  4. Step 4: Simplify right side
    81,247.25x = 5,344,290,235.24
  5. Step 5: Solve for x
    x = 5,344,290,235.24/81,247.25
  6. Step 6: Final answer
    x = 65,778.11

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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.