Home / 81,223.68-121,863.18-43,787.37

Finding the Fourth Proportional to 81,223.68, 121,863.18 and 43,787.37

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Solution

The fourth proportional to 81,223.68, 121,863.18 and 43,787.37 is: 65,695.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,223.68 : 121,863.18 = 43,787.37 : x
  2. Step 2: Convert to fraction form
    81,223.68/121,863.18 = 43,787.37/x
  3. Step 3: Cross multiply
    81,223.68x = 121,863.18 × 43,787.37
  4. Step 4: Simplify right side
    81,223.68x = 5,336,067,323.78
  5. Step 5: Solve for x
    x = 5,336,067,323.78/81,223.68
  6. Step 6: Final answer
    x = 65,695.96

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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.