Home / 80,780.54-121,169.07-21,616.20

Finding the Fourth Proportional to 80,780.54, 121,169.07 and 21,616.20

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Solution

The fourth proportional to 80,780.54, 121,169.07 and 21,616.20 is: 32,423.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.54 : 121,169.07 = 21,616.20 : x
  2. Step 2: Convert to fraction form
    80,780.54/121,169.07 = 21,616.20/x
  3. Step 3: Cross multiply
    80,780.54x = 121,169.07 × 21,616.20
  4. Step 4: Simplify right side
    80,780.54x = 2,619,214,850.93
  5. Step 5: Solve for x
    x = 2,619,214,850.93/80,780.54
  6. Step 6: Final answer
    x = 32,423.84

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1.5x scale

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.