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Finding the Fourth Proportional to 63,143.78, 87,149.72 and 37,651.79

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Solution

The fourth proportional to 63,143.78, 87,149.72 and 37,651.79 is: 51,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,143.78 : 87,149.72 = 37,651.79 : x
  2. Step 2: Convert to fraction form
    63,143.78/87,149.72 = 37,651.79/x
  3. Step 3: Cross multiply
    63,143.78x = 87,149.72 × 37,651.79
  4. Step 4: Simplify right side
    63,143.78x = 3,281,342,956.00
  5. Step 5: Solve for x
    x = 3,281,342,956.00/63,143.78
  6. Step 6: Final answer
    x = 51,966.21

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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.