Home / 87,617.26-120,911.70-49,891.51

Finding the Fourth Proportional to 87,617.26, 120,911.70 and 49,891.51

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Solution

The fourth proportional to 87,617.26, 120,911.70 and 49,891.51 is: 68,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,617.26 : 120,911.70 = 49,891.51 : x
  2. Step 2: Convert to fraction form
    87,617.26/120,911.70 = 49,891.51/x
  3. Step 3: Cross multiply
    87,617.26x = 120,911.70 × 49,891.51
  4. Step 4: Simplify right side
    87,617.26x = 6,032,467,289.67
  5. Step 5: Solve for x
    x = 6,032,467,289.67/87,617.26
  6. Step 6: Final answer
    x = 68,850.22

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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.