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Finding the Fourth Proportional to 80,406.40, 120,614.31 and 27,093.92

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Solution

The fourth proportional to 80,406.40, 120,614.31 and 27,093.92 is: 40,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,406.40 : 120,614.31 = 27,093.92 : x
  2. Step 2: Convert to fraction form
    80,406.40/120,614.31 = 27,093.92/x
  3. Step 3: Cross multiply
    80,406.40x = 120,614.31 × 27,093.92
  4. Step 4: Simplify right side
    80,406.40x = 3,267,914,466.00
  5. Step 5: Solve for x
    x = 3,267,914,466.00/80,406.40
  6. Step 6: Final answer
    x = 40,642.47

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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.