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Finding the Fourth Proportional to 79,251, 109,371.24 and 45,717

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Solution

The fourth proportional to 79,251, 109,371.24 and 45,717 is: 63,092.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251 : 109,371.24 = 45,717 : x
  2. Step 2: Convert to fraction form
    79,251/109,371.24 = 45,717/x
  3. Step 3: Cross multiply
    79,251x = 109,371.24 × 45,717
  4. Step 4: Simplify right side
    79,251x = 5,000,124,979.08
  5. Step 5: Solve for x
    x = 5,000,124,979.08/79,251
  6. Step 6: Final answer
    x = 63,092.26

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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.