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Finding the Fourth Proportional to 40,379.87, 60,576.72 and 13,723.04

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Solution

The fourth proportional to 40,379.87, 60,576.72 and 13,723.04 is: 20,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,379.87 : 60,576.72 = 13,723.04 : x
  2. Step 2: Convert to fraction form
    40,379.87/60,576.72 = 13,723.04/x
  3. Step 3: Cross multiply
    40,379.87x = 60,576.72 × 13,723.04
  4. Step 4: Simplify right side
    40,379.87x = 831,296,751.63
  5. Step 5: Solve for x
    x = 831,296,751.63/40,379.87
  6. Step 6: Final answer
    x = 20,586.91

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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.