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Finding the Fourth Proportional to 80,843.37, 111,474.12 and 66,263.37

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Solution

The fourth proportional to 80,843.37, 111,474.12 and 66,263.37 is: 91,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,843.37 : 111,474.12 = 66,263.37 : x
  2. Step 2: Convert to fraction form
    80,843.37/111,474.12 = 66,263.37/x
  3. Step 3: Cross multiply
    80,843.37x = 111,474.12 × 66,263.37
  4. Step 4: Simplify right side
    80,843.37x = 7,386,650,858.98
  5. Step 5: Solve for x
    x = 7,386,650,858.98/80,843.37
  6. Step 6: Final answer
    x = 91,369.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.