Home / 81,917.86-122,719.20-50,235.44

Finding the Fourth Proportional to 81,917.86, 122,719.20 and 50,235.44

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Solution

The fourth proportional to 81,917.86, 122,719.20 and 50,235.44 is: 75,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,917.86 : 122,719.20 = 50,235.44 : x
  2. Step 2: Convert to fraction form
    81,917.86/122,719.20 = 50,235.44/x
  3. Step 3: Cross multiply
    81,917.86x = 122,719.20 × 50,235.44
  4. Step 4: Simplify right side
    81,917.86x = 6,164,853,008.45
  5. Step 5: Solve for x
    x = 6,164,853,008.45/81,917.86
  6. Step 6: Final answer
    x = 75,256.52

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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.