Home / 80,204.48-120,237.60-38,680.64

Finding the Fourth Proportional to 80,204.48, 120,237.60 and 38,680.64

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Solution

The fourth proportional to 80,204.48, 120,237.60 and 38,680.64 is: 57,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,204.48 : 120,237.60 = 38,680.64 : x
  2. Step 2: Convert to fraction form
    80,204.48/120,237.60 = 38,680.64/x
  3. Step 3: Cross multiply
    80,204.48x = 120,237.60 × 38,680.64
  4. Step 4: Simplify right side
    80,204.48x = 4,650,867,320.06
  5. Step 5: Solve for x
    x = 4,650,867,320.06/80,204.48
  6. Step 6: Final answer
    x = 57,987.63

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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.