Home / 75,120.11-103,665.77-41,130.75

Finding the Fourth Proportional to 75,120.11, 103,665.77 and 41,130.75

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Solution

The fourth proportional to 75,120.11, 103,665.77 and 41,130.75 is: 56,760.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120.11 : 103,665.77 = 41,130.75 : x
  2. Step 2: Convert to fraction form
    75,120.11/103,665.77 = 41,130.75/x
  3. Step 3: Cross multiply
    75,120.11x = 103,665.77 × 41,130.75
  4. Step 4: Simplify right side
    75,120.11x = 4,263,850,869.43
  5. Step 5: Solve for x
    x = 4,263,850,869.43/75,120.11
  6. Step 6: Final answer
    x = 56,760.44

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1.5x scale

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.