Home / 80,900.33-121,405.17-28,310.27

Finding the Fourth Proportional to 80,900.33, 121,405.17 and 28,310.27

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Solution

The fourth proportional to 80,900.33, 121,405.17 and 28,310.27 is: 42,484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,900.33 : 121,405.17 = 28,310.27 : x
  2. Step 2: Convert to fraction form
    80,900.33/121,405.17 = 28,310.27/x
  3. Step 3: Cross multiply
    80,900.33x = 121,405.17 × 28,310.27
  4. Step 4: Simplify right side
    80,900.33x = 3,437,013,244.52
  5. Step 5: Solve for x
    x = 3,437,013,244.52/80,900.33
  6. Step 6: Final answer
    x = 42,484.54

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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.