Home / 87,331.03-120,481.82-55,055.02

Finding the Fourth Proportional to 87,331.03, 120,481.82 and 55,055.02

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Solution

The fourth proportional to 87,331.03, 120,481.82 and 55,055.02 is: 75,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,331.03 : 120,481.82 = 55,055.02 : x
  2. Step 2: Convert to fraction form
    87,331.03/120,481.82 = 55,055.02/x
  3. Step 3: Cross multiply
    87,331.03x = 120,481.82 × 55,055.02
  4. Step 4: Simplify right side
    87,331.03x = 6,633,129,009.74
  5. Step 5: Solve for x
    x = 6,633,129,009.74/87,331.03
  6. Step 6: Final answer
    x = 75,953.86

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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.