Home / 87,640.57-120,968.76-51,843.03

Finding the Fourth Proportional to 87,640.57, 120,968.76 and 51,843.03

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Solution

The fourth proportional to 87,640.57, 120,968.76 and 51,843.03 is: 71,558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,640.57 : 120,968.76 = 51,843.03 : x
  2. Step 2: Convert to fraction form
    87,640.57/120,968.76 = 51,843.03/x
  3. Step 3: Cross multiply
    87,640.57x = 120,968.76 × 51,843.03
  4. Step 4: Simplify right side
    87,640.57x = 6,271,386,794.52
  5. Step 5: Solve for x
    x = 6,271,386,794.52/87,640.57
  6. Step 6: Final answer
    x = 71,558.03

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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.