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Finding the Fourth Proportional to 63,286.74, 87,353.01 and 39,399.39

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Solution

The fourth proportional to 63,286.74, 87,353.01 and 39,399.39 is: 54,381.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,286.74 : 87,353.01 = 39,399.39 : x
  2. Step 2: Convert to fraction form
    63,286.74/87,353.01 = 39,399.39/x
  3. Step 3: Cross multiply
    63,286.74x = 87,353.01 × 39,399.39
  4. Step 4: Simplify right side
    63,286.74x = 3,441,655,308.66
  5. Step 5: Solve for x
    x = 3,441,655,308.66/63,286.74
  6. Step 6: Final answer
    x = 54,381.93

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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.