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Finding the Fourth Proportional to 40,104.84, 60,163.10 and 12,405

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Solution

The fourth proportional to 40,104.84, 60,163.10 and 12,405 is: 18,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,104.84 : 60,163.10 = 12,405 : x
  2. Step 2: Convert to fraction form
    40,104.84/60,163.10 = 12,405/x
  3. Step 3: Cross multiply
    40,104.84x = 60,163.10 × 12,405
  4. Step 4: Simplify right side
    40,104.84x = 746,323,255.50
  5. Step 5: Solve for x
    x = 746,323,255.50/40,104.84
  6. Step 6: Final answer
    x = 18,609.31

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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.