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Finding the Fourth Proportional to 68.13, 93.87 and 59.76

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Solution

The fourth proportional to 68.13, 93.87 and 59.76 is: 82.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.13 : 93.87 = 59.76 : x
  2. Step 2: Convert to fraction form
    68.13/93.87 = 59.76/x
  3. Step 3: Cross multiply
    68.13x = 93.87 × 59.76
  4. Step 4: Simplify right side
    68.13x = 5,609.67
  5. Step 5: Solve for x
    x = 5,609.67/68.13
  6. Step 6: Final answer
    x = 82.34

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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.