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Finding the Fourth Proportional to 63,640.43, 87,818.66 and 36,784.68

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Solution

The fourth proportional to 63,640.43, 87,818.66 and 36,784.68 is: 50,759.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.43 : 87,818.66 = 36,784.68 : x
  2. Step 2: Convert to fraction form
    63,640.43/87,818.66 = 36,784.68/x
  3. Step 3: Cross multiply
    63,640.43x = 87,818.66 × 36,784.68
  4. Step 4: Simplify right side
    63,640.43x = 3,230,381,122.21
  5. Step 5: Solve for x
    x = 3,230,381,122.21/63,640.43
  6. Step 6: Final answer
    x = 50,759.89

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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.