Home / 56,722-84,934.36-39,991.48

Finding the Fourth Proportional to 56,722, 84,934.36 and 39,991.48

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Solution

The fourth proportional to 56,722, 84,934.36 and 39,991.48 is: 59,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,722 : 84,934.36 = 39,991.48 : x
  2. Step 2: Convert to fraction form
    56,722/84,934.36 = 39,991.48/x
  3. Step 3: Cross multiply
    56,722x = 84,934.36 × 39,991.48
  4. Step 4: Simplify right side
    56,722x = 3,396,650,759.25
  5. Step 5: Solve for x
    x = 3,396,650,759.25/56,722
  6. Step 6: Final answer
    x = 59,882.42

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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.