Home / 87,648-120,979.05-51,850.45

Finding the Fourth Proportional to 87,648, 120,979.05 and 51,850.45

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Solution

The fourth proportional to 87,648, 120,979.05 and 51,850.45 is: 71,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648 : 120,979.05 = 51,850.45 : x
  2. Step 2: Convert to fraction form
    87,648/120,979.05 = 51,850.45/x
  3. Step 3: Cross multiply
    87,648x = 120,979.05 × 51,850.45
  4. Step 4: Simplify right side
    87,648x = 6,272,818,183.07
  5. Step 5: Solve for x
    x = 6,272,818,183.07/87,648
  6. Step 6: Final answer
    x = 71,568.30

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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.