Home / 71,216.72-106,816.92-18,631.28

Finding the Fourth Proportional to 71,216.72, 106,816.92 and 18,631.28

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Solution

The fourth proportional to 71,216.72, 106,816.92 and 18,631.28 is: 27,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,216.72 : 106,816.92 = 18,631.28 : x
  2. Step 2: Convert to fraction form
    71,216.72/106,816.92 = 18,631.28/x
  3. Step 3: Cross multiply
    71,216.72x = 106,816.92 × 18,631.28
  4. Step 4: Simplify right side
    71,216.72x = 1,990,135,945.26
  5. Step 5: Solve for x
    x = 1,990,135,945.26/71,216.72
  6. Step 6: Final answer
    x = 27,944.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.