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Finding the Fourth Proportional to 75,414.60, 113,121.90 and 20,010.60

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Solution

The fourth proportional to 75,414.60, 113,121.90 and 20,010.60 is: 30,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,414.60 : 113,121.90 = 20,010.60 : x
  2. Step 2: Convert to fraction form
    75,414.60/113,121.90 = 20,010.60/x
  3. Step 3: Cross multiply
    75,414.60x = 113,121.90 × 20,010.60
  4. Step 4: Simplify right side
    75,414.60x = 2,263,637,092.14
  5. Step 5: Solve for x
    x = 2,263,637,092.14/75,414.60
  6. Step 6: Final answer
    x = 30,015.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.