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Finding the Fourth Proportional to 54,763.71, 82,110.21 and 21,487.11

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Solution

The fourth proportional to 54,763.71, 82,110.21 and 21,487.11 is: 32,216.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,763.71 : 82,110.21 = 21,487.11 : x
  2. Step 2: Convert to fraction form
    54,763.71/82,110.21 = 21,487.11/x
  3. Step 3: Cross multiply
    54,763.71x = 82,110.21 × 21,487.11
  4. Step 4: Simplify right side
    54,763.71x = 1,764,311,114.39
  5. Step 5: Solve for x
    x = 1,764,311,114.39/54,763.71
  6. Step 6: Final answer
    x = 32,216.79

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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.