Home / 87,272.25-120,447-53,273.61

Finding the Fourth Proportional to 87,272.25, 120,447 and 53,273.61

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Solution

The fourth proportional to 87,272.25, 120,447 and 53,273.61 is: 73,524.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,272.25 : 120,447 = 53,273.61 : x
  2. Step 2: Convert to fraction form
    87,272.25/120,447 = 53,273.61/x
  3. Step 3: Cross multiply
    87,272.25x = 120,447 × 53,273.61
  4. Step 4: Simplify right side
    87,272.25x = 6,416,646,503.67
  5. Step 5: Solve for x
    x = 6,416,646,503.67/87,272.25
  6. Step 6: Final answer
    x = 73,524.48

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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.