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Finding the Fourth Proportional to 73.82, 110.08 and 66.06

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Solution

The fourth proportional to 73.82, 110.08 and 66.06 is: 98.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.82 : 110.08 = 66.06 : x
  2. Step 2: Convert to fraction form
    73.82/110.08 = 66.06/x
  3. Step 3: Cross multiply
    73.82x = 110.08 × 66.06
  4. Step 4: Simplify right side
    73.82x = 7,271.88
  5. Step 5: Solve for x
    x = 7,271.88/73.82
  6. Step 6: Final answer
    x = 98.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.