Home / 78,163.33-107,864.66-42,353.28

Finding the Fourth Proportional to 78,163.33, 107,864.66 and 42,353.28

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Solution

The fourth proportional to 78,163.33, 107,864.66 and 42,353.28 is: 58,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163.33 : 107,864.66 = 42,353.28 : x
  2. Step 2: Convert to fraction form
    78,163.33/107,864.66 = 42,353.28/x
  3. Step 3: Cross multiply
    78,163.33x = 107,864.66 × 42,353.28
  4. Step 4: Simplify right side
    78,163.33x = 4,568,422,252.97
  5. Step 5: Solve for x
    x = 4,568,422,252.97/78,163.33
  6. Step 6: Final answer
    x = 58,447.13

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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.