Home / 86,879.20-130,321.23-30,711.37

Finding the Fourth Proportional to 86,879.20, 130,321.23 and 30,711.37

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Solution

The fourth proportional to 86,879.20, 130,321.23 and 30,711.37 is: 46,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,879.20 : 130,321.23 = 30,711.37 : x
  2. Step 2: Convert to fraction form
    86,879.20/130,321.23 = 30,711.37/x
  3. Step 3: Cross multiply
    86,879.20x = 130,321.23 × 30,711.37
  4. Step 4: Simplify right side
    86,879.20x = 4,002,343,513.39
  5. Step 5: Solve for x
    x = 4,002,343,513.39/86,879.20
  6. Step 6: Final answer
    x = 46,067.91

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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.