Home / 87,652.62-120,886.11-74,106.72

Finding the Fourth Proportional to 87,652.62, 120,886.11 and 74,106.72

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Solution

The fourth proportional to 87,652.62, 120,886.11 and 74,106.72 is: 102,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,652.62 : 120,886.11 = 74,106.72 : x
  2. Step 2: Convert to fraction form
    87,652.62/120,886.11 = 74,106.72/x
  3. Step 3: Cross multiply
    87,652.62x = 120,886.11 × 74,106.72
  4. Step 4: Simplify right side
    87,652.62x = 8,958,473,105.66
  5. Step 5: Solve for x
    x = 8,958,473,105.66/87,652.62
  6. Step 6: Final answer
    x = 102,204.28

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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.