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Finding the Fourth Proportional to 80,259.66, 120,361.05 and 23,321.70

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Solution

The fourth proportional to 80,259.66, 120,361.05 and 23,321.70 is: 34,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,259.66 : 120,361.05 = 23,321.70 : x
  2. Step 2: Convert to fraction form
    80,259.66/120,361.05 = 23,321.70/x
  3. Step 3: Cross multiply
    80,259.66x = 120,361.05 × 23,321.70
  4. Step 4: Simplify right side
    80,259.66x = 2,807,024,299.79
  5. Step 5: Solve for x
    x = 2,807,024,299.79/80,259.66
  6. Step 6: Final answer
    x = 34,974.29

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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.