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Finding the Fourth Proportional to 73,425.43, 110,138.25 and 18,021.43

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Solution

The fourth proportional to 73,425.43, 110,138.25 and 18,021.43 is: 27,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,425.43 : 110,138.25 = 18,021.43 : x
  2. Step 2: Convert to fraction form
    73,425.43/110,138.25 = 18,021.43/x
  3. Step 3: Cross multiply
    73,425.43x = 110,138.25 × 18,021.43
  4. Step 4: Simplify right side
    73,425.43x = 1,984,848,762.70
  5. Step 5: Solve for x
    x = 1,984,848,762.70/73,425.43
  6. Step 6: Final answer
    x = 27,032.17

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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.