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Finding the Fourth Proportional to 63,173.78, 87,179.76 and 34,879.64

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Solution

The fourth proportional to 63,173.78, 87,179.76 and 34,879.64 is: 48,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,173.78 : 87,179.76 = 34,879.64 : x
  2. Step 2: Convert to fraction form
    63,173.78/87,179.76 = 34,879.64/x
  3. Step 3: Cross multiply
    63,173.78x = 87,179.76 × 34,879.64
  4. Step 4: Simplify right side
    63,173.78x = 3,040,798,644.09
  5. Step 5: Solve for x
    x = 3,040,798,644.09/63,173.78
  6. Step 6: Final answer
    x = 48,133.87

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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.