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Finding the Fourth Proportional to 63,291.43, 87,380.07 and 39,450.39

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Solution

The fourth proportional to 63,291.43, 87,380.07 and 39,450.39 is: 54,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,291.43 : 87,380.07 = 39,450.39 : x
  2. Step 2: Convert to fraction form
    63,291.43/87,380.07 = 39,450.39/x
  3. Step 3: Cross multiply
    63,291.43x = 87,380.07 × 39,450.39
  4. Step 4: Simplify right side
    63,291.43x = 3,447,177,855.63
  5. Step 5: Solve for x
    x = 3,447,177,855.63/63,291.43
  6. Step 6: Final answer
    x = 54,465.16

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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.