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Finding the Fourth Proportional to 40,161, 60,242.04 and 12,459

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Solution

The fourth proportional to 40,161, 60,242.04 and 12,459 is: 18,688.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,161 : 60,242.04 = 12,459 : x
  2. Step 2: Convert to fraction form
    40,161/60,242.04 = 12,459/x
  3. Step 3: Cross multiply
    40,161x = 60,242.04 × 12,459
  4. Step 4: Simplify right side
    40,161x = 750,555,576.36
  5. Step 5: Solve for x
    x = 750,555,576.36/40,161
  6. Step 6: Final answer
    x = 18,688.67

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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.