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Finding the Fourth Proportional to 40,660.76, 60,940.10 and 21,940.04

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Solution

The fourth proportional to 40,660.76, 60,940.10 and 21,940.04 is: 32,882.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,660.76 : 60,940.10 = 21,940.04 : x
  2. Step 2: Convert to fraction form
    40,660.76/60,940.10 = 21,940.04/x
  3. Step 3: Cross multiply
    40,660.76x = 60,940.10 × 21,940.04
  4. Step 4: Simplify right side
    40,660.76x = 1,337,028,231.60
  5. Step 5: Solve for x
    x = 1,337,028,231.60/40,660.76
  6. Step 6: Final answer
    x = 32,882.52

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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.