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Finding the Fourth Proportional to 73,251.05, 109,866.81 and 20,664.77

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Solution

The fourth proportional to 73,251.05, 109,866.81 and 20,664.77 is: 30,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,251.05 : 109,866.81 = 20,664.77 : x
  2. Step 2: Convert to fraction form
    73,251.05/109,866.81 = 20,664.77/x
  3. Step 3: Cross multiply
    73,251.05x = 109,866.81 × 20,664.77
  4. Step 4: Simplify right side
    73,251.05x = 2,270,372,359.28
  5. Step 5: Solve for x
    x = 2,270,372,359.28/73,251.05
  6. Step 6: Final answer
    x = 30,994.40

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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.