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Finding the Fourth Proportional to 73,112.25, 100,894.92 and 39,578.25

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Solution

The fourth proportional to 73,112.25, 100,894.92 and 39,578.25 is: 54,617.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,112.25 : 100,894.92 = 39,578.25 : x
  2. Step 2: Convert to fraction form
    73,112.25/100,894.92 = 39,578.25/x
  3. Step 3: Cross multiply
    73,112.25x = 100,894.92 × 39,578.25
  4. Step 4: Simplify right side
    73,112.25x = 3,993,244,367.49
  5. Step 5: Solve for x
    x = 3,993,244,367.49/73,112.25
  6. Step 6: Final answer
    x = 54,617.99

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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.