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Finding the Fourth Proportional to 45,163.74, 67,749.12 and 13,571.34

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Solution

The fourth proportional to 45,163.74, 67,749.12 and 13,571.34 is: 20,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,163.74 : 67,749.12 = 13,571.34 : x
  2. Step 2: Convert to fraction form
    45,163.74/67,749.12 = 13,571.34/x
  3. Step 3: Cross multiply
    45,163.74x = 67,749.12 × 13,571.34
  4. Step 4: Simplify right side
    45,163.74x = 919,445,935.62
  5. Step 5: Solve for x
    x = 919,445,935.62/45,163.74
  6. Step 6: Final answer
    x = 20,358.06

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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.