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Finding the Fourth Proportional to 80,561, 120,867.18 and 33,801.32

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Solution

The fourth proportional to 80,561, 120,867.18 and 33,801.32 is: 50,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,561 : 120,867.18 = 33,801.32 : x
  2. Step 2: Convert to fraction form
    80,561/120,867.18 = 33,801.32/x
  3. Step 3: Cross multiply
    80,561x = 120,867.18 × 33,801.32
  4. Step 4: Simplify right side
    80,561x = 4,085,470,228.68
  5. Step 5: Solve for x
    x = 4,085,470,228.68/80,561
  6. Step 6: Final answer
    x = 50,712.75

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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.