Home / 77,213.92-115,704.24-57,399.52

Finding the Fourth Proportional to 77,213.92, 115,704.24 and 57,399.52

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Solution

The fourth proportional to 77,213.92, 115,704.24 and 57,399.52 is: 86,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213.92 : 115,704.24 = 57,399.52 : x
  2. Step 2: Convert to fraction form
    77,213.92/115,704.24 = 57,399.52/x
  3. Step 3: Cross multiply
    77,213.92x = 115,704.24 × 57,399.52
  4. Step 4: Simplify right side
    77,213.92x = 6,641,367,837.96
  5. Step 5: Solve for x
    x = 6,641,367,837.96/77,213.92
  6. Step 6: Final answer
    x = 86,012.57

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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.