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Finding the Fourth Proportional to 29,321.72, 43,982.58 and 7,135.11

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Solution

The fourth proportional to 29,321.72, 43,982.58 and 7,135.11 is: 10,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,321.72 : 43,982.58 = 7,135.11 : x
  2. Step 2: Convert to fraction form
    29,321.72/43,982.58 = 7,135.11/x
  3. Step 3: Cross multiply
    29,321.72x = 43,982.58 × 7,135.11
  4. Step 4: Simplify right side
    29,321.72x = 313,820,546.38
  5. Step 5: Solve for x
    x = 313,820,546.38/29,321.72
  6. Step 6: Final answer
    x = 10,702.67

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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.