Home / 77,042.92-115,564.38-20,883.04

Finding the Fourth Proportional to 77,042.92, 115,564.38 and 20,883.04

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Solution

The fourth proportional to 77,042.92, 115,564.38 and 20,883.04 is: 31,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,042.92 : 115,564.38 = 20,883.04 : x
  2. Step 2: Convert to fraction form
    77,042.92/115,564.38 = 20,883.04/x
  3. Step 3: Cross multiply
    77,042.92x = 115,564.38 × 20,883.04
  4. Step 4: Simplify right side
    77,042.92x = 2,413,335,202.89
  5. Step 5: Solve for x
    x = 2,413,335,202.89/77,042.92
  6. Step 6: Final answer
    x = 31,324.56

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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.