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Finding the Fourth Proportional to 68.84, 94.53 and 61.56

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Solution

The fourth proportional to 68.84, 94.53 and 61.56 is: 84.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.84 : 94.53 = 61.56 : x
  2. Step 2: Convert to fraction form
    68.84/94.53 = 61.56/x
  3. Step 3: Cross multiply
    68.84x = 94.53 × 61.56
  4. Step 4: Simplify right side
    68.84x = 5,819.27
  5. Step 5: Solve for x
    x = 5,819.27/68.84
  6. Step 6: Final answer
    x = 84.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.