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Finding the Fourth Proportional to 69,807.71, 104,723.78 and 19,886.60

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Solution

The fourth proportional to 69,807.71, 104,723.78 and 19,886.60 is: 29,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,807.71 : 104,723.78 = 19,886.60 : x
  2. Step 2: Convert to fraction form
    69,807.71/104,723.78 = 19,886.60/x
  3. Step 3: Cross multiply
    69,807.71x = 104,723.78 × 19,886.60
  4. Step 4: Simplify right side
    69,807.71x = 2,082,599,300.30
  5. Step 5: Solve for x
    x = 2,082,599,300.30/69,807.71
  6. Step 6: Final answer
    x = 29,833.37

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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.