Home / 81,685.20-122,530.92-25,530.48

Finding the Fourth Proportional to 81,685.20, 122,530.92 and 25,530.48

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Solution

The fourth proportional to 81,685.20, 122,530.92 and 25,530.48 is: 38,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.20 : 122,530.92 = 25,530.48 : x
  2. Step 2: Convert to fraction form
    81,685.20/122,530.92 = 25,530.48/x
  3. Step 3: Cross multiply
    81,685.20x = 122,530.92 × 25,530.48
  4. Step 4: Simplify right side
    81,685.20x = 3,128,273,202.44
  5. Step 5: Solve for x
    x = 3,128,273,202.44/81,685.20
  6. Step 6: Final answer
    x = 38,296.70

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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.