Home / 75,120.35-103,667.31-41,128.27

Finding the Fourth Proportional to 75,120.35, 103,667.31 and 41,128.27

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Solution

The fourth proportional to 75,120.35, 103,667.31 and 41,128.27 is: 56,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120.35 : 103,667.31 = 41,128.27 : x
  2. Step 2: Convert to fraction form
    75,120.35/103,667.31 = 41,128.27/x
  3. Step 3: Cross multiply
    75,120.35x = 103,667.31 × 41,128.27
  4. Step 4: Simplify right side
    75,120.35x = 4,263,657,115.85
  5. Step 5: Solve for x
    x = 4,263,657,115.85/75,120.35
  6. Step 6: Final answer
    x = 56,757.68

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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.