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Finding the Fourth Proportional to 63,105.87, 87,086.40 and 34,811.56

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Solution

The fourth proportional to 63,105.87, 87,086.40 and 34,811.56 is: 48,040.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,105.87 : 87,086.40 = 34,811.56 : x
  2. Step 2: Convert to fraction form
    63,105.87/87,086.40 = 34,811.56/x
  3. Step 3: Cross multiply
    63,105.87x = 87,086.40 × 34,811.56
  4. Step 4: Simplify right side
    63,105.87x = 3,031,613,438.78
  5. Step 5: Solve for x
    x = 3,031,613,438.78/63,105.87
  6. Step 6: Final answer
    x = 48,040.12

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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.