Home / 57,879.26-79,837.62-39,721.69

Finding the Fourth Proportional to 57,879.26, 79,837.62 and 39,721.69

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Solution

The fourth proportional to 57,879.26, 79,837.62 and 39,721.69 is: 54,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.26 : 79,837.62 = 39,721.69 : x
  2. Step 2: Convert to fraction form
    57,879.26/79,837.62 = 39,721.69/x
  3. Step 3: Cross multiply
    57,879.26x = 79,837.62 × 39,721.69
  4. Step 4: Simplify right side
    57,879.26x = 3,171,284,893.57
  5. Step 5: Solve for x
    x = 3,171,284,893.57/57,879.26
  6. Step 6: Final answer
    x = 54,791.39

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1.5x scale

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.