Home / 80,820.11-121,230.16-30,905.24

Finding the Fourth Proportional to 80,820.11, 121,230.16 and 30,905.24

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Solution

The fourth proportional to 80,820.11, 121,230.16 and 30,905.24 is: 46,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,820.11 : 121,230.16 = 30,905.24 : x
  2. Step 2: Convert to fraction form
    80,820.11/121,230.16 = 30,905.24/x
  3. Step 3: Cross multiply
    80,820.11x = 121,230.16 × 30,905.24
  4. Step 4: Simplify right side
    80,820.11x = 3,746,646,506.62
  5. Step 5: Solve for x
    x = 3,746,646,506.62/80,820.11
  6. Step 6: Final answer
    x = 46,357.85

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Similar ratio
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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.