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Finding the Fourth Proportional to 73,651.37, 110,456.90 and 20,330.61

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Solution

The fourth proportional to 73,651.37, 110,456.90 and 20,330.61 is: 30,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,651.37 : 110,456.90 = 20,330.61 : x
  2. Step 2: Convert to fraction form
    73,651.37/110,456.90 = 20,330.61/x
  3. Step 3: Cross multiply
    73,651.37x = 110,456.90 × 20,330.61
  4. Step 4: Simplify right side
    73,651.37x = 2,245,656,206.54
  5. Step 5: Solve for x
    x = 2,245,656,206.54/73,651.37
  6. Step 6: Final answer
    x = 30,490.35

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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.