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Finding the Fourth Proportional to 73,039.13, 100,794 and 39,505.13

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Solution

The fourth proportional to 73,039.13, 100,794 and 39,505.13 is: 54,517.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,039.13 : 100,794 = 39,505.13 : x
  2. Step 2: Convert to fraction form
    73,039.13/100,794 = 39,505.13/x
  3. Step 3: Cross multiply
    73,039.13x = 100,794 × 39,505.13
  4. Step 4: Simplify right side
    73,039.13x = 3,981,879,569.25
  5. Step 5: Solve for x
    x = 3,981,879,569.25/73,039.13
  6. Step 6: Final answer
    x = 54,517.08

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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.