Home / 78,092.91-117,067.68-28,161.27

Finding the Fourth Proportional to 78,092.91, 117,067.68 and 28,161.27

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Solution

The fourth proportional to 78,092.91, 117,067.68 and 28,161.27 is: 42,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,092.91 : 117,067.68 = 28,161.27 : x
  2. Step 2: Convert to fraction form
    78,092.91/117,067.68 = 28,161.27/x
  3. Step 3: Cross multiply
    78,092.91x = 117,067.68 × 28,161.27
  4. Step 4: Simplify right side
    78,092.91x = 3,296,774,544.75
  5. Step 5: Solve for x
    x = 3,296,774,544.75/78,092.91
  6. Step 6: Final answer
    x = 42,216.05

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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.