Home / 87,669.90-120,982.04-49,429.12

Finding the Fourth Proportional to 87,669.90, 120,982.04 and 49,429.12

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Solution

The fourth proportional to 87,669.90, 120,982.04 and 49,429.12 is: 68,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,669.90 : 120,982.04 = 49,429.12 : x
  2. Step 2: Convert to fraction form
    87,669.90/120,982.04 = 49,429.12/x
  3. Step 3: Cross multiply
    87,669.90x = 120,982.04 × 49,429.12
  4. Step 4: Simplify right side
    87,669.90x = 5,980,034,920.95
  5. Step 5: Solve for x
    x = 5,980,034,920.95/87,669.90
  6. Step 6: Final answer
    x = 68,210.81

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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.