Home / 80,758.71-121,138.56-28,168.26

Finding the Fourth Proportional to 80,758.71, 121,138.56 and 28,168.26

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Solution

The fourth proportional to 80,758.71, 121,138.56 and 28,168.26 is: 42,252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.71 : 121,138.56 = 28,168.26 : x
  2. Step 2: Convert to fraction form
    80,758.71/121,138.56 = 28,168.26/x
  3. Step 3: Cross multiply
    80,758.71x = 121,138.56 × 28,168.26
  4. Step 4: Simplify right side
    80,758.71x = 3,412,262,454.11
  5. Step 5: Solve for x
    x = 3,412,262,454.11/80,758.71
  6. Step 6: Final answer
    x = 42,252.56

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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.