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Finding the Fourth Proportional to 63,638.25, 87,815.64 and 36,782.49

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Solution

The fourth proportional to 63,638.25, 87,815.64 and 36,782.49 is: 50,756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,638.25 : 87,815.64 = 36,782.49 : x
  2. Step 2: Convert to fraction form
    63,638.25/87,815.64 = 36,782.49/x
  3. Step 3: Cross multiply
    63,638.25x = 87,815.64 × 36,782.49
  4. Step 4: Simplify right side
    63,638.25x = 3,230,077,900.14
  5. Step 5: Solve for x
    x = 3,230,077,900.14/63,638.25
  6. Step 6: Final answer
    x = 50,756.86

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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.