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Finding the Fourth Proportional to 73,021.29, 100,769.49 and 39,487.29

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Solution

The fourth proportional to 73,021.29, 100,769.49 and 39,487.29 is: 54,492.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,021.29 : 100,769.49 = 39,487.29 : x
  2. Step 2: Convert to fraction form
    73,021.29/100,769.49 = 39,487.29/x
  3. Step 3: Cross multiply
    73,021.29x = 100,769.49 × 39,487.29
  4. Step 4: Simplify right side
    73,021.29x = 3,979,114,074.78
  5. Step 5: Solve for x
    x = 3,979,114,074.78/73,021.29
  6. Step 6: Final answer
    x = 54,492.52

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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.