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Finding the Fourth Proportional to 68.19, 101.89 and 59.99

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Solution

The fourth proportional to 68.19, 101.89 and 59.99 is: 89.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.19 : 101.89 = 59.99 : x
  2. Step 2: Convert to fraction form
    68.19/101.89 = 59.99/x
  3. Step 3: Cross multiply
    68.19x = 101.89 × 59.99
  4. Step 4: Simplify right side
    68.19x = 6,112.38
  5. Step 5: Solve for x
    x = 6,112.38/68.19
  6. Step 6: Final answer
    x = 89.64

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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.