Home / 77,278.11-115,917.77-27,358.41

Finding the Fourth Proportional to 77,278.11, 115,917.77 and 27,358.41

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Solution

The fourth proportional to 77,278.11, 115,917.77 and 27,358.41 is: 41,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,278.11 : 115,917.77 = 27,358.41 : x
  2. Step 2: Convert to fraction form
    77,278.11/115,917.77 = 27,358.41/x
  3. Step 3: Cross multiply
    77,278.11x = 115,917.77 × 27,358.41
  4. Step 4: Simplify right side
    77,278.11x = 3,171,325,877.95
  5. Step 5: Solve for x
    x = 3,171,325,877.95/77,278.11
  6. Step 6: Final answer
    x = 41,037.83

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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.