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Finding the Fourth Proportional to 76.06, 114.09 and 40.06

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Solution

The fourth proportional to 76.06, 114.09 and 40.06 is: 60.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.06 : 114.09 = 40.06 : x
  2. Step 2: Convert to fraction form
    76.06/114.09 = 40.06/x
  3. Step 3: Cross multiply
    76.06x = 114.09 × 40.06
  4. Step 4: Simplify right side
    76.06x = 4,570.16
  5. Step 5: Solve for x
    x = 4,570.16/76.06
  6. Step 6: Final answer
    x = 60.09

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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.