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Finding the Fourth Proportional to 80,809.96, 120,991.38 and 41,281.96

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Solution

The fourth proportional to 80,809.96, 120,991.38 and 41,281.96 is: 61,808.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,809.96 : 120,991.38 = 41,281.96 : x
  2. Step 2: Convert to fraction form
    80,809.96/120,991.38 = 41,281.96/x
  3. Step 3: Cross multiply
    80,809.96x = 120,991.38 × 41,281.96
  4. Step 4: Simplify right side
    80,809.96x = 4,994,761,309.50
  5. Step 5: Solve for x
    x = 4,994,761,309.50/80,809.96
  6. Step 6: Final answer
    x = 61,808.73

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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.