Home / 75,982.20-113,973.30-20,578.20

Finding the Fourth Proportional to 75,982.20, 113,973.30 and 20,578.20

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Solution

The fourth proportional to 75,982.20, 113,973.30 and 20,578.20 is: 30,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,982.20 : 113,973.30 = 20,578.20 : x
  2. Step 2: Convert to fraction form
    75,982.20/113,973.30 = 20,578.20/x
  3. Step 3: Cross multiply
    75,982.20x = 113,973.30 × 20,578.20
  4. Step 4: Simplify right side
    75,982.20x = 2,345,365,362.06
  5. Step 5: Solve for x
    x = 2,345,365,362.06/75,982.20
  6. Step 6: Final answer
    x = 30,867.30

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Similar ratio
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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.