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Finding the Fourth Proportional to 75.14, 104.19 and 71.04

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Solution

The fourth proportional to 75.14, 104.19 and 71.04 is: 98.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.14 : 104.19 = 71.04 : x
  2. Step 2: Convert to fraction form
    75.14/104.19 = 71.04/x
  3. Step 3: Cross multiply
    75.14x = 104.19 × 71.04
  4. Step 4: Simplify right side
    75.14x = 7,401.78
  5. Step 5: Solve for x
    x = 7,401.78/75.14
  6. Step 6: Final answer
    x = 98.50

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.