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Finding the Fourth Proportional to 271,079.70, 406,619.55 and 74,087.70

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Solution

The fourth proportional to 271,079.70, 406,619.55 and 74,087.70 is: 111,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,079.70 : 406,619.55 = 74,087.70 : x
  2. Step 2: Convert to fraction form
    271,079.70/406,619.55 = 74,087.70/x
  3. Step 3: Cross multiply
    271,079.70x = 406,619.55 × 74,087.70
  4. Step 4: Simplify right side
    271,079.70x = 30,125,507,234.54
  5. Step 5: Solve for x
    x = 30,125,507,234.54/271,079.70
  6. Step 6: Final answer
    x = 111,131.55

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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.