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Finding the Fourth Proportional to 40,493.91, 60,742.30 and 10,912.47

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Solution

The fourth proportional to 40,493.91, 60,742.30 and 10,912.47 is: 16,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,493.91 : 60,742.30 = 10,912.47 : x
  2. Step 2: Convert to fraction form
    40,493.91/60,742.30 = 10,912.47/x
  3. Step 3: Cross multiply
    40,493.91x = 60,742.30 × 10,912.47
  4. Step 4: Simplify right side
    40,493.91x = 662,848,526.48
  5. Step 5: Solve for x
    x = 662,848,526.48/40,493.91
  6. Step 6: Final answer
    x = 16,369.09

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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.