Home / 51,581.76-71,179.20-28,919.04

Finding the Fourth Proportional to 51,581.76, 71,179.20 and 28,919.04

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Solution

The fourth proportional to 51,581.76, 71,179.20 and 28,919.04 is: 39,906.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,581.76 : 71,179.20 = 28,919.04 : x
  2. Step 2: Convert to fraction form
    51,581.76/71,179.20 = 28,919.04/x
  3. Step 3: Cross multiply
    51,581.76x = 71,179.20 × 28,919.04
  4. Step 4: Simplify right side
    51,581.76x = 2,058,434,131.97
  5. Step 5: Solve for x
    x = 2,058,434,131.97/51,581.76
  6. Step 6: Final answer
    x = 39,906.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.