Home / 75,119.94-103,665.60-41,128.70

Finding the Fourth Proportional to 75,119.94, 103,665.60 and 41,128.70

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Solution

The fourth proportional to 75,119.94, 103,665.60 and 41,128.70 is: 56,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,119.94 : 103,665.60 = 41,128.70 : x
  2. Step 2: Convert to fraction form
    75,119.94/103,665.60 = 41,128.70/x
  3. Step 3: Cross multiply
    75,119.94x = 103,665.60 × 41,128.70
  4. Step 4: Simplify right side
    75,119.94x = 4,263,630,844.39
  5. Step 5: Solve for x
    x = 4,263,630,844.39/75,119.94
  6. Step 6: Final answer
    x = 56,757.64

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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.