Home / 81,919.89-122,722.20-50,237.46

Finding the Fourth Proportional to 81,919.89, 122,722.20 and 50,237.46

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Solution

The fourth proportional to 81,919.89, 122,722.20 and 50,237.46 is: 75,259.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,919.89 : 122,722.20 = 50,237.46 : x
  2. Step 2: Convert to fraction form
    81,919.89/122,722.20 = 50,237.46/x
  3. Step 3: Cross multiply
    81,919.89x = 122,722.20 × 50,237.46
  4. Step 4: Simplify right side
    81,919.89x = 6,165,251,613.61
  5. Step 5: Solve for x
    x = 6,165,251,613.61/81,919.89
  6. Step 6: Final answer
    x = 75,259.52

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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.