Home / 87,716.37-131,616.68-68,879.01

Finding the Fourth Proportional to 87,716.37, 131,616.68 and 68,879.01

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Solution

The fourth proportional to 87,716.37, 131,616.68 and 68,879.01 is: 103,351.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,716.37 : 131,616.68 = 68,879.01 : x
  2. Step 2: Convert to fraction form
    87,716.37/131,616.68 = 68,879.01/x
  3. Step 3: Cross multiply
    87,716.37x = 131,616.68 × 68,879.01
  4. Step 4: Simplify right side
    87,716.37x = 9,065,626,617.89
  5. Step 5: Solve for x
    x = 9,065,626,617.89/87,716.37
  6. Step 6: Final answer
    x = 103,351.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.