Home / 67,015.26-100,369.77-31,979.52

Finding the Fourth Proportional to 67,015.26, 100,369.77 and 31,979.52

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Solution

The fourth proportional to 67,015.26, 100,369.77 and 31,979.52 is: 47,896.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,015.26 : 100,369.77 = 31,979.52 : x
  2. Step 2: Convert to fraction form
    67,015.26/100,369.77 = 31,979.52/x
  3. Step 3: Cross multiply
    67,015.26x = 100,369.77 × 31,979.52
  4. Step 4: Simplify right side
    67,015.26x = 3,209,777,067.11
  5. Step 5: Solve for x
    x = 3,209,777,067.11/67,015.26
  6. Step 6: Final answer
    x = 47,896.21

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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.