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Finding the Fourth Proportional to 70,997.49, 97,976.86 and 39,166.38

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Solution

The fourth proportional to 70,997.49, 97,976.86 and 39,166.38 is: 54,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,997.49 : 97,976.86 = 39,166.38 : x
  2. Step 2: Convert to fraction form
    70,997.49/97,976.86 = 39,166.38/x
  3. Step 3: Cross multiply
    70,997.49x = 97,976.86 × 39,166.38
  4. Step 4: Simplify right side
    70,997.49x = 3,837,398,832.05
  5. Step 5: Solve for x
    x = 3,837,398,832.05/70,997.49
  6. Step 6: Final answer
    x = 54,049.78

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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.