Home / 87,004.22-131,099.13-71,555.40

Finding the Fourth Proportional to 87,004.22, 131,099.13 and 71,555.40

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Solution

The fourth proportional to 87,004.22, 131,099.13 and 71,555.40 is: 107,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,004.22 : 131,099.13 = 71,555.40 : x
  2. Step 2: Convert to fraction form
    87,004.22/131,099.13 = 71,555.40/x
  3. Step 3: Cross multiply
    87,004.22x = 131,099.13 × 71,555.40
  4. Step 4: Simplify right side
    87,004.22x = 9,380,850,686.80
  5. Step 5: Solve for x
    x = 9,380,850,686.80/87,004.22
  6. Step 6: Final answer
    x = 107,820.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.