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Finding the Fourth Proportional to 69,384.66, 104,076.99 and 39,739.20

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Solution

The fourth proportional to 69,384.66, 104,076.99 and 39,739.20 is: 59,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,384.66 : 104,076.99 = 39,739.20 : x
  2. Step 2: Convert to fraction form
    69,384.66/104,076.99 = 39,739.20/x
  3. Step 3: Cross multiply
    69,384.66x = 104,076.99 × 39,739.20
  4. Step 4: Simplify right side
    69,384.66x = 4,135,936,321.01
  5. Step 5: Solve for x
    x = 4,135,936,321.01/69,384.66
  6. Step 6: Final answer
    x = 59,608.80

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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.