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Finding the Fourth Proportional to 63,213.78, 87,234.48 and 34,918.86

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Solution

The fourth proportional to 63,213.78, 87,234.48 and 34,918.86 is: 48,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,213.78 : 87,234.48 = 34,918.86 : x
  2. Step 2: Convert to fraction form
    63,213.78/87,234.48 = 34,918.86/x
  3. Step 3: Cross multiply
    63,213.78x = 87,234.48 × 34,918.86
  4. Step 4: Simplify right side
    63,213.78x = 3,046,128,594.29
  5. Step 5: Solve for x
    x = 3,046,128,594.29/63,213.78
  6. Step 6: Final answer
    x = 48,187.73

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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.