Home / 81,143.76-111,959.20-47,132.04

Finding the Fourth Proportional to 81,143.76, 111,959.20 and 47,132.04

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Solution

The fourth proportional to 81,143.76, 111,959.20 and 47,132.04 is: 65,031.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.76 : 111,959.20 = 47,132.04 : x
  2. Step 2: Convert to fraction form
    81,143.76/111,959.20 = 47,132.04/x
  3. Step 3: Cross multiply
    81,143.76x = 111,959.20 × 47,132.04
  4. Step 4: Simplify right side
    81,143.76x = 5,276,864,761.76
  5. Step 5: Solve for x
    x = 5,276,864,761.76/81,143.76
  6. Step 6: Final answer
    x = 65,031.06

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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.