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Finding the Fourth Proportional to 68,873.78, 95,047.22 and 38,661.28

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Solution

The fourth proportional to 68,873.78, 95,047.22 and 38,661.28 is: 53,353.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,873.78 : 95,047.22 = 38,661.28 : x
  2. Step 2: Convert to fraction form
    68,873.78/95,047.22 = 38,661.28/x
  3. Step 3: Cross multiply
    68,873.78x = 95,047.22 × 38,661.28
  4. Step 4: Simplify right side
    68,873.78x = 3,674,647,256.12
  5. Step 5: Solve for x
    x = 3,674,647,256.12/68,873.78
  6. Step 6: Final answer
    x = 53,353.36

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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.