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Finding the Fourth Proportional to 56,253.72, 84,371.76 and 18,813.54

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Solution

The fourth proportional to 56,253.72, 84,371.76 and 18,813.54 is: 28,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,253.72 : 84,371.76 = 18,813.54 : x
  2. Step 2: Convert to fraction form
    56,253.72/84,371.76 = 18,813.54/x
  3. Step 3: Cross multiply
    56,253.72x = 84,371.76 × 18,813.54
  4. Step 4: Simplify right side
    56,253.72x = 1,587,331,481.63
  5. Step 5: Solve for x
    x = 1,587,331,481.63/56,253.72
  6. Step 6: Final answer
    x = 28,217.36

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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.