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Finding the Fourth Proportional to 61.11, 91.74 and 58.68

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Solution

The fourth proportional to 61.11, 91.74 and 58.68 is: 88.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.11 : 91.74 = 58.68 : x
  2. Step 2: Convert to fraction form
    61.11/91.74 = 58.68/x
  3. Step 3: Cross multiply
    61.11x = 91.74 × 58.68
  4. Step 4: Simplify right side
    61.11x = 5,383.30
  5. Step 5: Solve for x
    x = 5,383.30/61.11
  6. Step 6: Final answer
    x = 88.09

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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.