Home / 57,721.78-86,591.33-20,275.25

Finding the Fourth Proportional to 57,721.78, 86,591.33 and 20,275.25

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Solution

The fourth proportional to 57,721.78, 86,591.33 and 20,275.25 is: 30,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.78 : 86,591.33 = 20,275.25 : x
  2. Step 2: Convert to fraction form
    57,721.78/86,591.33 = 20,275.25/x
  3. Step 3: Cross multiply
    57,721.78x = 86,591.33 × 20,275.25
  4. Step 4: Simplify right side
    57,721.78x = 1,755,660,863.58
  5. Step 5: Solve for x
    x = 1,755,660,863.58/57,721.78
  6. Step 6: Final answer
    x = 30,415.92

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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.