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Finding the Fourth Proportional to 63,305.83, 87,379.32 and 39,418.39

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Solution

The fourth proportional to 63,305.83, 87,379.32 and 39,418.39 is: 54,408.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,305.83 : 87,379.32 = 39,418.39 : x
  2. Step 2: Convert to fraction form
    63,305.83/87,379.32 = 39,418.39/x
  3. Step 3: Cross multiply
    63,305.83x = 87,379.32 × 39,418.39
  4. Step 4: Simplify right side
    63,305.83x = 3,444,352,113.69
  5. Step 5: Solve for x
    x = 3,444,352,113.69/63,305.83
  6. Step 6: Final answer
    x = 54,408.13

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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.