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Finding the Fourth Proportional to 40,496.81, 60,763.68 and 20,789.22

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Solution

The fourth proportional to 40,496.81, 60,763.68 and 20,789.22 is: 31,193.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,496.81 : 60,763.68 = 20,789.22 : x
  2. Step 2: Convert to fraction form
    40,496.81/60,763.68 = 20,789.22/x
  3. Step 3: Cross multiply
    40,496.81x = 60,763.68 × 20,789.22
  4. Step 4: Simplify right side
    40,496.81x = 1,263,229,511.53
  5. Step 5: Solve for x
    x = 1,263,229,511.53/40,496.81
  6. Step 6: Final answer
    x = 31,193.31

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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.