Home / 87,812.10-131,723.81-30,879.02

Finding the Fourth Proportional to 87,812.10, 131,723.81 and 30,879.02

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Solution

The fourth proportional to 87,812.10, 131,723.81 and 30,879.02 is: 46,320.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.10 : 131,723.81 = 30,879.02 : x
  2. Step 2: Convert to fraction form
    87,812.10/131,723.81 = 30,879.02/x
  3. Step 3: Cross multiply
    87,812.10x = 131,723.81 × 30,879.02
  4. Step 4: Simplify right side
    87,812.10x = 4,067,502,163.47
  5. Step 5: Solve for x
    x = 4,067,502,163.47/87,812.10
  6. Step 6: Final answer
    x = 46,320.52

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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.