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Finding the Fourth Proportional to 83,399.01, 125,098.52 and 21,069.51

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Solution

The fourth proportional to 83,399.01, 125,098.52 and 21,069.51 is: 31,604.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,399.01 : 125,098.52 = 21,069.51 : x
  2. Step 2: Convert to fraction form
    83,399.01/125,098.52 = 21,069.51/x
  3. Step 3: Cross multiply
    83,399.01x = 125,098.52 × 21,069.51
  4. Step 4: Simplify right side
    83,399.01x = 2,635,764,412.78
  5. Step 5: Solve for x
    x = 2,635,764,412.78/83,399.01
  6. Step 6: Final answer
    x = 31,604.27

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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.