Home / 77,279.10-115,919.26-27,359.42

Finding the Fourth Proportional to 77,279.10, 115,919.26 and 27,359.42

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Solution

The fourth proportional to 77,279.10, 115,919.26 and 27,359.42 is: 41,039.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.10 : 115,919.26 = 27,359.42 : x
  2. Step 2: Convert to fraction form
    77,279.10/115,919.26 = 27,359.42/x
  3. Step 3: Cross multiply
    77,279.10x = 115,919.26 × 27,359.42
  4. Step 4: Simplify right side
    77,279.10x = 3,171,483,720.43
  5. Step 5: Solve for x
    x = 3,171,483,720.43/77,279.10
  6. Step 6: Final answer
    x = 41,039.35

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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.