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Finding the Fourth Proportional to 80,799.80, 121,374.30 and 68,344.52

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Solution

The fourth proportional to 80,799.80, 121,374.30 and 68,344.52 is: 102,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,799.80 : 121,374.30 = 68,344.52 : x
  2. Step 2: Convert to fraction form
    80,799.80/121,374.30 = 68,344.52/x
  3. Step 3: Cross multiply
    80,799.80x = 121,374.30 × 68,344.52
  4. Step 4: Simplify right side
    80,799.80x = 8,295,268,273.84
  5. Step 5: Solve for x
    x = 8,295,268,273.84/80,799.80
  6. Step 6: Final answer
    x = 102,664.47

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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.