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Finding the Fourth Proportional to 53,163.88, 79,745.92 and 49,916.20

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Solution

The fourth proportional to 53,163.88, 79,745.92 and 49,916.20 is: 74,874.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,163.88 : 79,745.92 = 49,916.20 : x
  2. Step 2: Convert to fraction form
    53,163.88/79,745.92 = 49,916.20/x
  3. Step 3: Cross multiply
    53,163.88x = 79,745.92 × 49,916.20
  4. Step 4: Simplify right side
    53,163.88x = 3,980,613,291.90
  5. Step 5: Solve for x
    x = 3,980,613,291.90/53,163.88
  6. Step 6: Final answer
    x = 74,874.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.