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Finding the Fourth Proportional to 69,015.57, 103,481.54 and 45,017.81

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Solution

The fourth proportional to 69,015.57, 103,481.54 and 45,017.81 is: 67,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,015.57 : 103,481.54 = 45,017.81 : x
  2. Step 2: Convert to fraction form
    69,015.57/103,481.54 = 45,017.81/x
  3. Step 3: Cross multiply
    69,015.57x = 103,481.54 × 45,017.81
  4. Step 4: Simplify right side
    69,015.57x = 4,658,511,563.73
  5. Step 5: Solve for x
    x = 4,658,511,563.73/69,015.57
  6. Step 6: Final answer
    x = 67,499.43

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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.