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Finding the Fourth Proportional to 69,347, 104,037.78 and 20,099

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Solution

The fourth proportional to 69,347, 104,037.78 and 20,099 is: 30,153.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,347 : 104,037.78 = 20,099 : x
  2. Step 2: Convert to fraction form
    69,347/104,037.78 = 20,099/x
  3. Step 3: Cross multiply
    69,347x = 104,037.78 × 20,099
  4. Step 4: Simplify right side
    69,347x = 2,091,055,340.22
  5. Step 5: Solve for x
    x = 2,091,055,340.22/69,347
  6. Step 6: Final answer
    x = 30,153.51

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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.