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Finding the Fourth Proportional to 68.24, 101.93 and 54.67

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Solution

The fourth proportional to 68.24, 101.93 and 54.67 is: 81.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.24 : 101.93 = 54.67 : x
  2. Step 2: Convert to fraction form
    68.24/101.93 = 54.67/x
  3. Step 3: Cross multiply
    68.24x = 101.93 × 54.67
  4. Step 4: Simplify right side
    68.24x = 5,572.51
  5. Step 5: Solve for x
    x = 5,572.51/68.24
  6. Step 6: Final answer
    x = 81.66

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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.