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Finding the Fourth Proportional to 56,912.22, 85,324.12 and 36,879.39

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Solution

The fourth proportional to 56,912.22, 85,324.12 and 36,879.39 is: 55,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,912.22 : 85,324.12 = 36,879.39 : x
  2. Step 2: Convert to fraction form
    56,912.22/85,324.12 = 36,879.39/x
  3. Step 3: Cross multiply
    56,912.22x = 85,324.12 × 36,879.39
  4. Step 4: Simplify right side
    56,912.22x = 3,146,701,405.69
  5. Step 5: Solve for x
    x = 3,146,701,405.69/56,912.22
  6. Step 6: Final answer
    x = 55,290.44

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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.