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Finding the Fourth Proportional to 55,419.87, 76,380.53 and 41,958.87

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Solution

The fourth proportional to 55,419.87, 76,380.53 and 41,958.87 is: 57,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419.87 : 76,380.53 = 41,958.87 : x
  2. Step 2: Convert to fraction form
    55,419.87/76,380.53 = 41,958.87/x
  3. Step 3: Cross multiply
    55,419.87x = 76,380.53 × 41,958.87
  4. Step 4: Simplify right side
    55,419.87x = 3,204,840,519.01
  5. Step 5: Solve for x
    x = 3,204,840,519.01/55,419.87
  6. Step 6: Final answer
    x = 57,828.37

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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.