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Finding the Fourth Proportional to 69,778.20, 104,691.60 and 30,363.60

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Solution

The fourth proportional to 69,778.20, 104,691.60 and 30,363.60 is: 45,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,778.20 : 104,691.60 = 30,363.60 : x
  2. Step 2: Convert to fraction form
    69,778.20/104,691.60 = 30,363.60/x
  3. Step 3: Cross multiply
    69,778.20x = 104,691.60 × 30,363.60
  4. Step 4: Simplify right side
    69,778.20x = 3,178,813,865.76
  5. Step 5: Solve for x
    x = 3,178,813,865.76/69,778.20
  6. Step 6: Final answer
    x = 45,555.97

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1.5x scale

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.