Home / 87,676.10-120,990.58-49,435.30

Finding the Fourth Proportional to 87,676.10, 120,990.58 and 49,435.30

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Solution

The fourth proportional to 87,676.10, 120,990.58 and 49,435.30 is: 68,219.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,676.10 : 120,990.58 = 49,435.30 : x
  2. Step 2: Convert to fraction form
    87,676.10/120,990.58 = 49,435.30/x
  3. Step 3: Cross multiply
    87,676.10x = 120,990.58 × 49,435.30
  4. Step 4: Simplify right side
    87,676.10x = 5,981,205,619.47
  5. Step 5: Solve for x
    x = 5,981,205,619.47/87,676.10
  6. Step 6: Final answer
    x = 68,219.34

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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.