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Finding the Fourth Proportional to 73,091.28, 100,865.91 and 39,557.28

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Solution

The fourth proportional to 73,091.28, 100,865.91 and 39,557.28 is: 54,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,091.28 : 100,865.91 = 39,557.28 : x
  2. Step 2: Convert to fraction form
    73,091.28/100,865.91 = 39,557.28/x
  3. Step 3: Cross multiply
    73,091.28x = 100,865.91 × 39,557.28
  4. Step 4: Simplify right side
    73,091.28x = 3,989,981,044.32
  5. Step 5: Solve for x
    x = 3,989,981,044.32/73,091.28
  6. Step 6: Final answer
    x = 54,589.02

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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.