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Finding the Fourth Proportional to 75,995.25, 113,992.88 and 20,591.25

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Solution

The fourth proportional to 75,995.25, 113,992.88 and 20,591.25 is: 30,886.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,995.25 : 113,992.88 = 20,591.25 : x
  2. Step 2: Convert to fraction form
    75,995.25/113,992.88 = 20,591.25/x
  3. Step 3: Cross multiply
    75,995.25x = 113,992.88 × 20,591.25
  4. Step 4: Simplify right side
    75,995.25x = 2,347,255,787.34
  5. Step 5: Solve for x
    x = 2,347,255,787.34/75,995.25
  6. Step 6: Final answer
    x = 30,886.88

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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.