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Finding the Fourth Proportional to 43,313.92, 64,971.84 and 12,148.48

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Solution

The fourth proportional to 43,313.92, 64,971.84 and 12,148.48 is: 18,222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,313.92 : 64,971.84 = 12,148.48 : x
  2. Step 2: Convert to fraction form
    43,313.92/64,971.84 = 12,148.48/x
  3. Step 3: Cross multiply
    43,313.92x = 64,971.84 × 12,148.48
  4. Step 4: Simplify right side
    43,313.92x = 789,309,098.80
  5. Step 5: Solve for x
    x = 789,309,098.80/43,313.92
  6. Step 6: Final answer
    x = 18,222.99

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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.