Home / 87,013.14-120,078.12-49,287.39

Finding the Fourth Proportional to 87,013.14, 120,078.12 and 49,287.39

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Solution

The fourth proportional to 87,013.14, 120,078.12 and 49,287.39 is: 68,016.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,013.14 : 120,078.12 = 49,287.39 : x
  2. Step 2: Convert to fraction form
    87,013.14/120,078.12 = 49,287.39/x
  3. Step 3: Cross multiply
    87,013.14x = 120,078.12 × 49,287.39
  4. Step 4: Simplify right side
    87,013.14x = 5,918,337,130.91
  5. Step 5: Solve for x
    x = 5,918,337,130.91/87,013.14
  6. Step 6: Final answer
    x = 68,016.59

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1.5x scale

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.