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Finding the Fourth Proportional to 40,491.80, 60,754.50 and 18,289.88

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Solution

The fourth proportional to 40,491.80, 60,754.50 and 18,289.88 is: 27,442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,491.80 : 60,754.50 = 18,289.88 : x
  2. Step 2: Convert to fraction form
    40,491.80/60,754.50 = 18,289.88/x
  3. Step 3: Cross multiply
    40,491.80x = 60,754.50 × 18,289.88
  4. Step 4: Simplify right side
    40,491.80x = 1,111,192,514.46
  5. Step 5: Solve for x
    x = 1,111,192,514.46/40,491.80
  6. Step 6: Final answer
    x = 27,442.41

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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.