Home / 87,406.12-120,619.32-49,677.88

Finding the Fourth Proportional to 87,406.12, 120,619.32 and 49,677.88

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Solution

The fourth proportional to 87,406.12, 120,619.32 and 49,677.88 is: 68,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,406.12 : 120,619.32 = 49,677.88 : x
  2. Step 2: Convert to fraction form
    87,406.12/120,619.32 = 49,677.88/x
  3. Step 3: Cross multiply
    87,406.12x = 120,619.32 × 49,677.88
  4. Step 4: Simplify right side
    87,406.12x = 5,992,112,104.64
  5. Step 5: Solve for x
    x = 5,992,112,104.64/87,406.12
  6. Step 6: Final answer
    x = 68,554.83

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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.