Home / 80,786.08-121,169.85-21,626.38

Finding the Fourth Proportional to 80,786.08, 121,169.85 and 21,626.38

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Solution

The fourth proportional to 80,786.08, 121,169.85 and 21,626.38 is: 32,437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,786.08 : 121,169.85 = 21,626.38 : x
  2. Step 2: Convert to fraction form
    80,786.08/121,169.85 = 21,626.38/x
  3. Step 3: Cross multiply
    80,786.08x = 121,169.85 × 21,626.38
  4. Step 4: Simplify right side
    80,786.08x = 2,620,465,220.64
  5. Step 5: Solve for x
    x = 2,620,465,220.64/80,786.08
  6. Step 6: Final answer
    x = 32,437.09

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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.