Home / 81,095.74-121,650.12-28,517.02

Finding the Fourth Proportional to 81,095.74, 121,650.12 and 28,517.02

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Solution

The fourth proportional to 81,095.74, 121,650.12 and 28,517.02 is: 42,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,095.74 : 121,650.12 = 28,517.02 : x
  2. Step 2: Convert to fraction form
    81,095.74/121,650.12 = 28,517.02/x
  3. Step 3: Cross multiply
    81,095.74x = 121,650.12 × 28,517.02
  4. Step 4: Simplify right side
    81,095.74x = 3,469,098,905.04
  5. Step 5: Solve for x
    x = 3,469,098,905.04/81,095.74
  6. Step 6: Final answer
    x = 42,777.82

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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.