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Finding the Fourth Proportional to 73.86, 110.81 and 35.36

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Solution

The fourth proportional to 73.86, 110.81 and 35.36 is: 53.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.86 : 110.81 = 35.36 : x
  2. Step 2: Convert to fraction form
    73.86/110.81 = 35.36/x
  3. Step 3: Cross multiply
    73.86x = 110.81 × 35.36
  4. Step 4: Simplify right side
    73.86x = 3,918.13
  5. Step 5: Solve for x
    x = 3,918.13/73.86
  6. Step 6: Final answer
    x = 53.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.