Home / 81,867.41-122,833.92-25,716.20

Finding the Fourth Proportional to 81,867.41, 122,833.92 and 25,716.20

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Solution

The fourth proportional to 81,867.41, 122,833.92 and 25,716.20 is: 38,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867.41 : 122,833.92 = 25,716.20 : x
  2. Step 2: Convert to fraction form
    81,867.41/122,833.92 = 25,716.20/x
  3. Step 3: Cross multiply
    81,867.41x = 122,833.92 × 25,716.20
  4. Step 4: Simplify right side
    81,867.41x = 3,158,821,653.50
  5. Step 5: Solve for x
    x = 3,158,821,653.50/81,867.41
  6. Step 6: Final answer
    x = 38,584.60

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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.