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Finding the Fourth Proportional to 75,995.19, 113,992.78 and 20,591.19

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Solution

The fourth proportional to 75,995.19, 113,992.78 and 20,591.19 is: 30,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,995.19 : 113,992.78 = 20,591.19 : x
  2. Step 2: Convert to fraction form
    75,995.19/113,992.78 = 20,591.19/x
  3. Step 3: Cross multiply
    75,995.19x = 113,992.78 × 20,591.19
  4. Step 4: Simplify right side
    75,995.19x = 2,347,246,991.61
  5. Step 5: Solve for x
    x = 2,347,246,991.61/75,995.19
  6. Step 6: Final answer
    x = 30,886.78

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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.