Home / 81,344.91-121,972.71-25,169.39

Finding the Fourth Proportional to 81,344.91, 121,972.71 and 25,169.39

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Solution

The fourth proportional to 81,344.91, 121,972.71 and 25,169.39 is: 37,740.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344.91 : 121,972.71 = 25,169.39 : x
  2. Step 2: Convert to fraction form
    81,344.91/121,972.71 = 25,169.39/x
  3. Step 3: Cross multiply
    81,344.91x = 121,972.71 × 25,169.39
  4. Step 4: Simplify right side
    81,344.91x = 3,069,978,097.48
  5. Step 5: Solve for x
    x = 3,069,978,097.48/81,344.91
  6. Step 6: Final answer
    x = 37,740.26

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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.