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Finding the Fourth Proportional to 80,246.70, 120,371.67 and 30,350.43

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Solution

The fourth proportional to 80,246.70, 120,371.67 and 30,350.43 is: 45,526.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,246.70 : 120,371.67 = 30,350.43 : x
  2. Step 2: Convert to fraction form
    80,246.70/120,371.67 = 30,350.43/x
  3. Step 3: Cross multiply
    80,246.70x = 120,371.67 × 30,350.43
  4. Step 4: Simplify right side
    80,246.70x = 3,653,331,944.32
  5. Step 5: Solve for x
    x = 3,653,331,944.32/80,246.70
  6. Step 6: Final answer
    x = 45,526.26

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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.