Home / 87,712.74-120,948.30-55,840.86

Finding the Fourth Proportional to 87,712.74, 120,948.30 and 55,840.86

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Solution

The fourth proportional to 87,712.74, 120,948.30 and 55,840.86 is: 76,999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.74 : 120,948.30 = 55,840.86 : x
  2. Step 2: Convert to fraction form
    87,712.74/120,948.30 = 55,840.86/x
  3. Step 3: Cross multiply
    87,712.74x = 120,948.30 × 55,840.86
  4. Step 4: Simplify right side
    87,712.74x = 6,753,857,087.54
  5. Step 5: Solve for x
    x = 6,753,857,087.54/87,712.74
  6. Step 6: Final answer
    x = 76,999.73

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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.