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Finding the Fourth Proportional to 61,234.80, 91,906.20 and 36,243.60

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Solution

The fourth proportional to 61,234.80, 91,906.20 and 36,243.60 is: 54,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,234.80 : 91,906.20 = 36,243.60 : x
  2. Step 2: Convert to fraction form
    61,234.80/91,906.20 = 36,243.60/x
  3. Step 3: Cross multiply
    61,234.80x = 91,906.20 × 36,243.60
  4. Step 4: Simplify right side
    61,234.80x = 3,331,011,550.32
  5. Step 5: Solve for x
    x = 3,331,011,550.32/61,234.80
  6. Step 6: Final answer
    x = 54,397.36

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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.