Home / 87,458.22-120,681.60-55,180.66

Finding the Fourth Proportional to 87,458.22, 120,681.60 and 55,180.66

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Solution

The fourth proportional to 87,458.22, 120,681.60 and 55,180.66 is: 76,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,458.22 : 120,681.60 = 55,180.66 : x
  2. Step 2: Convert to fraction form
    87,458.22/120,681.60 = 55,180.66/x
  3. Step 3: Cross multiply
    87,458.22x = 120,681.60 × 55,180.66
  4. Step 4: Simplify right side
    87,458.22x = 6,659,290,210.70
  5. Step 5: Solve for x
    x = 6,659,290,210.70/87,458.22
  6. Step 6: Final answer
    x = 76,142.53

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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.