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Finding the Fourth Proportional to 66,739.54, 100,003.93 and 54,198.54

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Solution

The fourth proportional to 66,739.54, 100,003.93 and 54,198.54 is: 81,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.54 : 100,003.93 = 54,198.54 : x
  2. Step 2: Convert to fraction form
    66,739.54/100,003.93 = 54,198.54/x
  3. Step 3: Cross multiply
    66,739.54x = 100,003.93 × 54,198.54
  4. Step 4: Simplify right side
    66,739.54x = 5,420,067,000.26
  5. Step 5: Solve for x
    x = 5,420,067,000.26/66,739.54
  6. Step 6: Final answer
    x = 81,212.23

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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.