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Finding the Fourth Proportional to 69,919.97, 96,490.17 and 39,705.91

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Solution

The fourth proportional to 69,919.97, 96,490.17 and 39,705.91 is: 54,794.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.97 : 96,490.17 = 39,705.91 : x
  2. Step 2: Convert to fraction form
    69,919.97/96,490.17 = 39,705.91/x
  3. Step 3: Cross multiply
    69,919.97x = 96,490.17 × 39,705.91
  4. Step 4: Simplify right side
    69,919.97x = 3,831,229,764.68
  5. Step 5: Solve for x
    x = 3,831,229,764.68/69,919.97
  6. Step 6: Final answer
    x = 54,794.50

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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.