Home / 75,076.99-103,691.28-51,162.15

Finding the Fourth Proportional to 75,076.99, 103,691.28 and 51,162.15

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Solution

The fourth proportional to 75,076.99, 103,691.28 and 51,162.15 is: 70,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,076.99 : 103,691.28 = 51,162.15 : x
  2. Step 2: Convert to fraction form
    75,076.99/103,691.28 = 51,162.15/x
  3. Step 3: Cross multiply
    75,076.99x = 103,691.28 × 51,162.15
  4. Step 4: Simplify right side
    75,076.99x = 5,305,068,821.05
  5. Step 5: Solve for x
    x = 5,305,068,821.05/75,076.99
  6. Step 6: Final answer
    x = 70,661.71

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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.