Home / 80,795.97-121,139.28-28,176.75

Finding the Fourth Proportional to 80,795.97, 121,139.28 and 28,176.75

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Solution

The fourth proportional to 80,795.97, 121,139.28 and 28,176.75 is: 42,246.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,795.97 : 121,139.28 = 28,176.75 : x
  2. Step 2: Convert to fraction form
    80,795.97/121,139.28 = 28,176.75/x
  3. Step 3: Cross multiply
    80,795.97x = 121,139.28 × 28,176.75
  4. Step 4: Simplify right side
    80,795.97x = 3,413,311,207.74
  5. Step 5: Solve for x
    x = 3,413,311,207.74/80,795.97
  6. Step 6: Final answer
    x = 42,246.06

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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.