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Finding the Fourth Proportional to 73.52, 110.12 and 68.75

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Solution

The fourth proportional to 73.52, 110.12 and 68.75 is: 102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.52 : 110.12 = 68.75 : x
  2. Step 2: Convert to fraction form
    73.52/110.12 = 68.75/x
  3. Step 3: Cross multiply
    73.52x = 110.12 × 68.75
  4. Step 4: Simplify right side
    73.52x = 7,570.75
  5. Step 5: Solve for x
    x = 7,570.75/73.52
  6. Step 6: Final answer
    x = 102.98

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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.