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Finding the Fourth Proportional to 73,174.65, 109,749.21 and 20,571.63

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Solution

The fourth proportional to 73,174.65, 109,749.21 and 20,571.63 is: 30,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,174.65 : 109,749.21 = 20,571.63 : x
  2. Step 2: Convert to fraction form
    73,174.65/109,749.21 = 20,571.63/x
  3. Step 3: Cross multiply
    73,174.65x = 109,749.21 × 20,571.63
  4. Step 4: Simplify right side
    73,174.65x = 2,257,719,592.17
  5. Step 5: Solve for x
    x = 2,257,719,592.17/73,174.65
  6. Step 6: Final answer
    x = 30,853.85

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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.