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Finding the Fourth Proportional to 63,728.57, 87,956.43 and 36,885.88

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Solution

The fourth proportional to 63,728.57, 87,956.43 and 36,885.88 is: 50,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,728.57 : 87,956.43 = 36,885.88 : x
  2. Step 2: Convert to fraction form
    63,728.57/87,956.43 = 36,885.88/x
  3. Step 3: Cross multiply
    63,728.57x = 87,956.43 × 36,885.88
  4. Step 4: Simplify right side
    63,728.57x = 3,244,349,882.43
  5. Step 5: Solve for x
    x = 3,244,349,882.43/63,728.57
  6. Step 6: Final answer
    x = 50,908.88

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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.