Home / 89,919.56-134,906.10-39,992.78

Finding the Fourth Proportional to 89,919.56, 134,906.10 and 39,992.78

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Solution

The fourth proportional to 89,919.56, 134,906.10 and 39,992.78 is: 60,001.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,919.56 : 134,906.10 = 39,992.78 : x
  2. Step 2: Convert to fraction form
    89,919.56/134,906.10 = 39,992.78/x
  3. Step 3: Cross multiply
    89,919.56x = 134,906.10 × 39,992.78
  4. Step 4: Simplify right side
    89,919.56x = 5,395,269,977.96
  5. Step 5: Solve for x
    x = 5,395,269,977.96/89,919.56
  6. Step 6: Final answer
    x = 60,001.07

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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.