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Finding the Fourth Proportional to 80,305.22, 120,568.17 and 40,888.82

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Solution

The fourth proportional to 80,305.22, 120,568.17 and 40,888.82 is: 61,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,305.22 : 120,568.17 = 40,888.82 : x
  2. Step 2: Convert to fraction form
    80,305.22/120,568.17 = 40,888.82/x
  3. Step 3: Cross multiply
    80,305.22x = 120,568.17 × 40,888.82
  4. Step 4: Simplify right side
    80,305.22x = 4,929,890,200.86
  5. Step 5: Solve for x
    x = 4,929,890,200.86/80,305.22
  6. Step 6: Final answer
    x = 61,389.41

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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.