Home / 77,231.12-115,767.28-43,879.92

Finding the Fourth Proportional to 77,231.12, 115,767.28 and 43,879.92

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Solution

The fourth proportional to 77,231.12, 115,767.28 and 43,879.92 is: 65,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,231.12 : 115,767.28 = 43,879.92 : x
  2. Step 2: Convert to fraction form
    77,231.12/115,767.28 = 43,879.92/x
  3. Step 3: Cross multiply
    77,231.12x = 115,767.28 × 43,879.92
  4. Step 4: Simplify right side
    77,231.12x = 5,079,858,985.02
  5. Step 5: Solve for x
    x = 5,079,858,985.02/77,231.12
  6. Step 6: Final answer
    x = 65,774.77

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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.