Home / 55,141.38-76,112.28-31,283.82

Finding the Fourth Proportional to 55,141.38, 76,112.28 and 31,283.82

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Solution

The fourth proportional to 55,141.38, 76,112.28 and 31,283.82 is: 43,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,141.38 : 76,112.28 = 31,283.82 : x
  2. Step 2: Convert to fraction form
    55,141.38/76,112.28 = 31,283.82/x
  3. Step 3: Cross multiply
    55,141.38x = 76,112.28 × 31,283.82
  4. Step 4: Simplify right side
    55,141.38x = 2,381,082,867.31
  5. Step 5: Solve for x
    x = 2,381,082,867.31/55,141.38
  6. Step 6: Final answer
    x = 43,181.42

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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.