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Finding the Fourth Proportional to 73.11, 109.67 and 40.53

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Solution

The fourth proportional to 73.11, 109.67 and 40.53 is: 60.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.11 : 109.67 = 40.53 : x
  2. Step 2: Convert to fraction form
    73.11/109.67 = 40.53/x
  3. Step 3: Cross multiply
    73.11x = 109.67 × 40.53
  4. Step 4: Simplify right side
    73.11x = 4,444.72
  5. Step 5: Solve for x
    x = 4,444.72/73.11
  6. Step 6: Final answer
    x = 60.80

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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.