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Finding the Fourth Proportional to 63,142.78, 87,148.34 and 37,650.79

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Solution

The fourth proportional to 63,142.78, 87,148.34 and 37,650.79 is: 51,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,142.78 : 87,148.34 = 37,650.79 : x
  2. Step 2: Convert to fraction form
    63,142.78/87,148.34 = 37,650.79/x
  3. Step 3: Cross multiply
    63,142.78x = 87,148.34 × 37,650.79
  4. Step 4: Simplify right side
    63,142.78x = 3,281,203,848.19
  5. Step 5: Solve for x
    x = 3,281,203,848.19/63,142.78
  6. Step 6: Final answer
    x = 51,964.83

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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.