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Finding the Fourth Proportional to 80,797.91, 121,226.02 and 28,215.14

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Solution

The fourth proportional to 80,797.91, 121,226.02 and 28,215.14 is: 42,332.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,797.91 : 121,226.02 = 28,215.14 : x
  2. Step 2: Convert to fraction form
    80,797.91/121,226.02 = 28,215.14/x
  3. Step 3: Cross multiply
    80,797.91x = 121,226.02 × 28,215.14
  4. Step 4: Simplify right side
    80,797.91x = 3,420,408,449.27
  5. Step 5: Solve for x
    x = 3,420,408,449.27/80,797.91
  6. Step 6: Final answer
    x = 42,332.89

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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.