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Finding the Fourth Proportional to 79,449.84, 119,190.12 and 30,198

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Solution

The fourth proportional to 79,449.84, 119,190.12 and 30,198 is: 45,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,449.84 : 119,190.12 = 30,198 : x
  2. Step 2: Convert to fraction form
    79,449.84/119,190.12 = 30,198/x
  3. Step 3: Cross multiply
    79,449.84x = 119,190.12 × 30,198
  4. Step 4: Simplify right side
    79,449.84x = 3,599,303,243.76
  5. Step 5: Solve for x
    x = 3,599,303,243.76/79,449.84
  6. Step 6: Final answer
    x = 45,302.84

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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.