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Finding the Fourth Proportional to 80,660.63, 120,965.03 and 26,613.15

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Solution

The fourth proportional to 80,660.63, 120,965.03 and 26,613.15 is: 39,911.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.63 : 120,965.03 = 26,613.15 : x
  2. Step 2: Convert to fraction form
    80,660.63/120,965.03 = 26,613.15/x
  3. Step 3: Cross multiply
    80,660.63x = 120,965.03 × 26,613.15
  4. Step 4: Simplify right side
    80,660.63x = 3,219,260,488.14
  5. Step 5: Solve for x
    x = 3,219,260,488.14/80,660.63
  6. Step 6: Final answer
    x = 39,911.17

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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.