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Finding the Fourth Proportional to 69,857.73, 104,727.81 and 30,385.11

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Solution

The fourth proportional to 69,857.73, 104,727.81 and 30,385.11 is: 45,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,857.73 : 104,727.81 = 30,385.11 : x
  2. Step 2: Convert to fraction form
    69,857.73/104,727.81 = 30,385.11/x
  3. Step 3: Cross multiply
    69,857.73x = 104,727.81 × 30,385.11
  4. Step 4: Simplify right side
    69,857.73x = 3,182,166,049.03
  5. Step 5: Solve for x
    x = 3,182,166,049.03/69,857.73
  6. Step 6: Final answer
    x = 45,552.10

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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.