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Finding the Fourth Proportional to 88.56, 122.06 and 67.79

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Solution

The fourth proportional to 88.56, 122.06 and 67.79 is: 93.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.56 : 122.06 = 67.79 : x
  2. Step 2: Convert to fraction form
    88.56/122.06 = 67.79/x
  3. Step 3: Cross multiply
    88.56x = 122.06 × 67.79
  4. Step 4: Simplify right side
    88.56x = 8,274.75
  5. Step 5: Solve for x
    x = 8,274.75/88.56
  6. Step 6: Final answer
    x = 93.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.