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Finding the Fourth Proportional to 70,047.30, 96,661.33 and 39,839.97

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Solution

The fourth proportional to 70,047.30, 96,661.33 and 39,839.97 is: 54,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,047.30 : 96,661.33 = 39,839.97 : x
  2. Step 2: Convert to fraction form
    70,047.30/96,661.33 = 39,839.97/x
  3. Step 3: Cross multiply
    70,047.30x = 96,661.33 × 39,839.97
  4. Step 4: Simplify right side
    70,047.30x = 3,850,984,288.16
  5. Step 5: Solve for x
    x = 3,850,984,288.16/70,047.30
  6. Step 6: Final answer
    x = 54,976.91

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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.