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Finding the Fourth Proportional to 68.55, 94.50 and 50.13

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Solution

The fourth proportional to 68.55, 94.50 and 50.13 is: 69.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.55 : 94.50 = 50.13 : x
  2. Step 2: Convert to fraction form
    68.55/94.50 = 50.13/x
  3. Step 3: Cross multiply
    68.55x = 94.50 × 50.13
  4. Step 4: Simplify right side
    68.55x = 4,737.29
  5. Step 5: Solve for x
    x = 4,737.29/68.55
  6. Step 6: Final answer
    x = 69.11

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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.