Home / 87,632.78-120,791.56-68,479.27

Finding the Fourth Proportional to 87,632.78, 120,791.56 and 68,479.27

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Solution

The fourth proportional to 87,632.78, 120,791.56 and 68,479.27 is: 94,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,632.78 : 120,791.56 = 68,479.27 : x
  2. Step 2: Convert to fraction form
    87,632.78/120,791.56 = 68,479.27/x
  3. Step 3: Cross multiply
    87,632.78x = 120,791.56 × 68,479.27
  4. Step 4: Simplify right side
    87,632.78x = 8,271,717,850.96
  5. Step 5: Solve for x
    x = 8,271,717,850.96/87,632.78
  6. Step 6: Final answer
    x = 94,390.68

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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.