Home / 87,616.78-120,911.05-47,330.54

Finding the Fourth Proportional to 87,616.78, 120,911.05 and 47,330.54

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Solution

The fourth proportional to 87,616.78, 120,911.05 and 47,330.54 is: 65,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616.78 : 120,911.05 = 47,330.54 : x
  2. Step 2: Convert to fraction form
    87,616.78/120,911.05 = 47,330.54/x
  3. Step 3: Cross multiply
    87,616.78x = 120,911.05 × 47,330.54
  4. Step 4: Simplify right side
    87,616.78x = 5,722,785,288.47
  5. Step 5: Solve for x
    x = 5,722,785,288.47/87,616.78
  6. Step 6: Final answer
    x = 65,316.09

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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.