Home / 80,772.72-121,210.92-39,197.04

Finding the Fourth Proportional to 80,772.72, 121,210.92 and 39,197.04

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Solution

The fourth proportional to 80,772.72, 121,210.92 and 39,197.04 is: 58,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.72 : 121,210.92 = 39,197.04 : x
  2. Step 2: Convert to fraction form
    80,772.72/121,210.92 = 39,197.04/x
  3. Step 3: Cross multiply
    80,772.72x = 121,210.92 × 39,197.04
  4. Step 4: Simplify right side
    80,772.72x = 4,751,109,279.68
  5. Step 5: Solve for x
    x = 4,751,109,279.68/80,772.72
  6. Step 6: Final answer
    x = 58,820.72

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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.