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Finding the Fourth Proportional to 69,428.74, 104,072.99 and 27,338.36

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Solution

The fourth proportional to 69,428.74, 104,072.99 and 27,338.36 is: 40,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,428.74 : 104,072.99 = 27,338.36 : x
  2. Step 2: Convert to fraction form
    69,428.74/104,072.99 = 27,338.36/x
  3. Step 3: Cross multiply
    69,428.74x = 104,072.99 × 27,338.36
  4. Step 4: Simplify right side
    69,428.74x = 2,845,184,730.20
  5. Step 5: Solve for x
    x = 2,845,184,730.20/69,428.74
  6. Step 6: Final answer
    x = 40,979.93

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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.