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Finding the Fourth Proportional to 69,793.40, 104,657.70 and 30,330.20

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Solution

The fourth proportional to 69,793.40, 104,657.70 and 30,330.20 is: 45,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,793.40 : 104,657.70 = 30,330.20 : x
  2. Step 2: Convert to fraction form
    69,793.40/104,657.70 = 30,330.20/x
  3. Step 3: Cross multiply
    69,793.40x = 104,657.70 × 30,330.20
  4. Step 4: Simplify right side
    69,793.40x = 3,174,288,972.54
  5. Step 5: Solve for x
    x = 3,174,288,972.54/69,793.40
  6. Step 6: Final answer
    x = 45,481.22

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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.