Home / 55,163.07-76,125.78-31,289.22

Finding the Fourth Proportional to 55,163.07, 76,125.78 and 31,289.22

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Solution

The fourth proportional to 55,163.07, 76,125.78 and 31,289.22 is: 43,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,163.07 : 76,125.78 = 31,289.22 : x
  2. Step 2: Convert to fraction form
    55,163.07/76,125.78 = 31,289.22/x
  3. Step 3: Cross multiply
    55,163.07x = 76,125.78 × 31,289.22
  4. Step 4: Simplify right side
    55,163.07x = 2,381,916,278.09
  5. Step 5: Solve for x
    x = 2,381,916,278.09/55,163.07
  6. Step 6: Final answer
    x = 43,179.55

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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.