Home / 75,781.60-104,481.32-51,867.20

Finding the Fourth Proportional to 75,781.60, 104,481.32 and 51,867.20

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Solution

The fourth proportional to 75,781.60, 104,481.32 and 51,867.20 is: 71,510.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,781.60 : 104,481.32 = 51,867.20 : x
  2. Step 2: Convert to fraction form
    75,781.60/104,481.32 = 51,867.20/x
  3. Step 3: Cross multiply
    75,781.60x = 104,481.32 × 51,867.20
  4. Step 4: Simplify right side
    75,781.60x = 5,419,153,520.70
  5. Step 5: Solve for x
    x = 5,419,153,520.70/75,781.60
  6. Step 6: Final answer
    x = 71,510.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.