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Finding the Fourth Proportional to 63,684.80, 87,857.76 and 39,769.96

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Solution

The fourth proportional to 63,684.80, 87,857.76 and 39,769.96 is: 54,865.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,684.80 : 87,857.76 = 39,769.96 : x
  2. Step 2: Convert to fraction form
    63,684.80/87,857.76 = 39,769.96/x
  3. Step 3: Cross multiply
    63,684.80x = 87,857.76 × 39,769.96
  4. Step 4: Simplify right side
    63,684.80x = 3,494,099,600.89
  5. Step 5: Solve for x
    x = 3,494,099,600.89/63,684.80
  6. Step 6: Final answer
    x = 54,865.52

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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.