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Finding the Fourth Proportional to 63,540.86, 87,660.12 and 36,664.30

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Solution

The fourth proportional to 63,540.86, 87,660.12 and 36,664.30 is: 50,581.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,540.86 : 87,660.12 = 36,664.30 : x
  2. Step 2: Convert to fraction form
    63,540.86/87,660.12 = 36,664.30/x
  3. Step 3: Cross multiply
    63,540.86x = 87,660.12 × 36,664.30
  4. Step 4: Simplify right side
    63,540.86x = 3,213,996,691.69
  5. Step 5: Solve for x
    x = 3,213,996,691.69/63,540.86
  6. Step 6: Final answer
    x = 50,581.58

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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.