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Finding the Fourth Proportional to 70,939.44, 97,896.87 and 39,107.79

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Solution

The fourth proportional to 70,939.44, 97,896.87 and 39,107.79 is: 53,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.44 : 97,896.87 = 39,107.79 : x
  2. Step 2: Convert to fraction form
    70,939.44/97,896.87 = 39,107.79/x
  3. Step 3: Cross multiply
    70,939.44x = 97,896.87 × 39,107.79
  4. Step 4: Simplify right side
    70,939.44x = 3,828,530,233.62
  5. Step 5: Solve for x
    x = 3,828,530,233.62/70,939.44
  6. Step 6: Final answer
    x = 53,968.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.