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Finding the Fourth Proportional to 68,131.38, 94,021.31 and 38,323.38

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Solution

The fourth proportional to 68,131.38, 94,021.31 and 38,323.38 is: 52,886.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,131.38 : 94,021.31 = 38,323.38 : x
  2. Step 2: Convert to fraction form
    68,131.38/94,021.31 = 38,323.38/x
  3. Step 3: Cross multiply
    68,131.38x = 94,021.31 × 38,323.38
  4. Step 4: Simplify right side
    68,131.38x = 3,603,214,391.23
  5. Step 5: Solve for x
    x = 3,603,214,391.23/68,131.38
  6. Step 6: Final answer
    x = 52,886.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.