Home / 85,432.05-117,786.15-55,163.97

Finding the Fourth Proportional to 85,432.05, 117,786.15 and 55,163.97

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Solution

The fourth proportional to 85,432.05, 117,786.15 and 55,163.97 is: 76,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.05 : 117,786.15 = 55,163.97 : x
  2. Step 2: Convert to fraction form
    85,432.05/117,786.15 = 55,163.97/x
  3. Step 3: Cross multiply
    85,432.05x = 117,786.15 × 55,163.97
  4. Step 4: Simplify right side
    85,432.05x = 6,497,551,645.02
  5. Step 5: Solve for x
    x = 6,497,551,645.02/85,432.05
  6. Step 6: Final answer
    x = 76,055.20

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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.