Home / 81,229.02-121,853.25-28,627.62

Finding the Fourth Proportional to 81,229.02, 121,853.25 and 28,627.62

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Solution

The fourth proportional to 81,229.02, 121,853.25 and 28,627.62 is: 42,944.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.02 : 121,853.25 = 28,627.62 : x
  2. Step 2: Convert to fraction form
    81,229.02/121,853.25 = 28,627.62/x
  3. Step 3: Cross multiply
    81,229.02x = 121,853.25 × 28,627.62
  4. Step 4: Simplify right side
    81,229.02x = 3,488,368,536.77
  5. Step 5: Solve for x
    x = 3,488,368,536.77/81,229.02
  6. Step 6: Final answer
    x = 42,944.86

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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.