Home / 87,013.08-120,078.06-49,287.30

Finding the Fourth Proportional to 87,013.08, 120,078.06 and 49,287.30

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Solution

The fourth proportional to 87,013.08, 120,078.06 and 49,287.30 is: 68,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,013.08 : 120,078.06 = 49,287.30 : x
  2. Step 2: Convert to fraction form
    87,013.08/120,078.06 = 49,287.30/x
  3. Step 3: Cross multiply
    87,013.08x = 120,078.06 × 49,287.30
  4. Step 4: Simplify right side
    87,013.08x = 5,918,323,366.64
  5. Step 5: Solve for x
    x = 5,918,323,366.64/87,013.08
  6. Step 6: Final answer
    x = 68,016.48

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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.