Home / 38,185.25-57,319.78-30,338.21

Finding the Fourth Proportional to 38,185.25, 57,319.78 and 30,338.21

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Solution

The fourth proportional to 38,185.25, 57,319.78 and 30,338.21 is: 45,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,185.25 : 57,319.78 = 30,338.21 : x
  2. Step 2: Convert to fraction form
    38,185.25/57,319.78 = 30,338.21/x
  3. Step 3: Cross multiply
    38,185.25x = 57,319.78 × 30,338.21
  4. Step 4: Simplify right side
    38,185.25x = 1,738,979,267.82
  5. Step 5: Solve for x
    x = 1,738,979,267.82/38,185.25
  6. Step 6: Final answer
    x = 45,540.60

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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.