Home / 80,771.72-121,209.42-39,196.04

Finding the Fourth Proportional to 80,771.72, 121,209.42 and 39,196.04

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Solution

The fourth proportional to 80,771.72, 121,209.42 and 39,196.04 is: 58,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.72 : 121,209.42 = 39,196.04 : x
  2. Step 2: Convert to fraction form
    80,771.72/121,209.42 = 39,196.04/x
  3. Step 3: Cross multiply
    80,771.72x = 121,209.42 × 39,196.04
  4. Step 4: Simplify right side
    80,771.72x = 4,750,929,274.70
  5. Step 5: Solve for x
    x = 4,750,929,274.70/80,771.72
  6. Step 6: Final answer
    x = 58,819.22

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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.