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Finding the Fourth Proportional to 80,799, 121,211.63 and 23,878.68

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Solution

The fourth proportional to 80,799, 121,211.63 and 23,878.68 is: 35,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,799 : 121,211.63 = 23,878.68 : x
  2. Step 2: Convert to fraction form
    80,799/121,211.63 = 23,878.68/x
  3. Step 3: Cross multiply
    80,799x = 121,211.63 × 23,878.68
  4. Step 4: Simplify right side
    80,799x = 2,894,373,784.75
  5. Step 5: Solve for x
    x = 2,894,373,784.75/80,799
  6. Step 6: Final answer
    x = 35,821.90

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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.