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Finding the Fourth Proportional to 69,538,101.20, 104,302,486.20 and 18,419,022.80

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Solution

The fourth proportional to 69,538,101.20, 104,302,486.20 and 18,419,022.80 is: 27,627,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,538,101.20 : 104,302,486.20 = 18,419,022.80 : x
  2. Step 2: Convert to fraction form
    69,538,101.20/104,302,486.20 = 18,419,022.80/x
  3. Step 3: Cross multiply
    69,538,101.20x = 104,302,486.20 × 18,419,022.80
  4. Step 4: Simplify right side
    69,538,101.20x = 1,921,149,871,414,485.50
  5. Step 5: Solve for x
    x = 1,921,149,871,414,485.50/69,538,101.20
  6. Step 6: Final answer
    x = 27,627,298.39

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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.