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Finding the Fourth Proportional to 80,415.40, 120,623.41 and 33,635.46

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Solution

The fourth proportional to 80,415.40, 120,623.41 and 33,635.46 is: 50,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,415.40 : 120,623.41 = 33,635.46 : x
  2. Step 2: Convert to fraction form
    80,415.40/120,623.41 = 33,635.46/x
  3. Step 3: Cross multiply
    80,415.40x = 120,623.41 × 33,635.46
  4. Step 4: Simplify right side
    80,415.40x = 4,057,223,882.12
  5. Step 5: Solve for x
    x = 4,057,223,882.12/80,415.40
  6. Step 6: Final answer
    x = 50,453.32

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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.