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Finding the Fourth Proportional to 80,395.37, 120,611.43 and 27,804.80

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Solution

The fourth proportional to 80,395.37, 120,611.43 and 27,804.80 is: 41,713.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,395.37 : 120,611.43 = 27,804.80 : x
  2. Step 2: Convert to fraction form
    80,395.37/120,611.43 = 27,804.80/x
  3. Step 3: Cross multiply
    80,395.37x = 120,611.43 × 27,804.80
  4. Step 4: Simplify right side
    80,395.37x = 3,353,576,990.39
  5. Step 5: Solve for x
    x = 3,353,576,990.39/80,395.37
  6. Step 6: Final answer
    x = 41,713.56

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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.