Home / 42,121.20-63,203.76-17,179.68

Finding the Fourth Proportional to 42,121.20, 63,203.76 and 17,179.68

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Solution

The fourth proportional to 42,121.20, 63,203.76 and 17,179.68 is: 25,778.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,121.20 : 63,203.76 = 17,179.68 : x
  2. Step 2: Convert to fraction form
    42,121.20/63,203.76 = 17,179.68/x
  3. Step 3: Cross multiply
    42,121.20x = 63,203.76 × 17,179.68
  4. Step 4: Simplify right side
    42,121.20x = 1,085,820,371.60
  5. Step 5: Solve for x
    x = 1,085,820,371.60/42,121.20
  6. Step 6: Final answer
    x = 25,778.48

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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.