Home / 81,296.72-121,949.04-25,175.60

Finding the Fourth Proportional to 81,296.72, 121,949.04 and 25,175.60

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Solution

The fourth proportional to 81,296.72, 121,949.04 and 25,175.60 is: 37,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,296.72 : 121,949.04 = 25,175.60 : x
  2. Step 2: Convert to fraction form
    81,296.72/121,949.04 = 25,175.60/x
  3. Step 3: Cross multiply
    81,296.72x = 121,949.04 × 25,175.60
  4. Step 4: Simplify right side
    81,296.72x = 3,070,140,251.42
  5. Step 5: Solve for x
    x = 3,070,140,251.42/81,296.72
  6. Step 6: Final answer
    x = 37,764.63

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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.