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Finding the Fourth Proportional to 71,249.31, 98,320.46 and 38,983.23

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Solution

The fourth proportional to 71,249.31, 98,320.46 and 38,983.23 is: 53,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,249.31 : 98,320.46 = 38,983.23 : x
  2. Step 2: Convert to fraction form
    71,249.31/98,320.46 = 38,983.23/x
  3. Step 3: Cross multiply
    71,249.31x = 98,320.46 × 38,983.23
  4. Step 4: Simplify right side
    71,249.31x = 3,832,848,910.97
  5. Step 5: Solve for x
    x = 3,832,848,910.97/71,249.31
  6. Step 6: Final answer
    x = 53,794.89

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1.5x scale

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.