Home / 80,763.75-121,165.20-25,359.75

Finding the Fourth Proportional to 80,763.75, 121,165.20 and 25,359.75

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Solution

The fourth proportional to 80,763.75, 121,165.20 and 25,359.75 is: 38,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,763.75 : 121,165.20 = 25,359.75 : x
  2. Step 2: Convert to fraction form
    80,763.75/121,165.20 = 25,359.75/x
  3. Step 3: Cross multiply
    80,763.75x = 121,165.20 × 25,359.75
  4. Step 4: Simplify right side
    80,763.75x = 3,072,719,180.70
  5. Step 5: Solve for x
    x = 3,072,719,180.70/80,763.75
  6. Step 6: Final answer
    x = 38,045.77

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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.