Home / 45,821.20-68,731.80-18,119.20

Finding the Fourth Proportional to 45,821.20, 68,731.80 and 18,119.20

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Solution

The fourth proportional to 45,821.20, 68,731.80 and 18,119.20 is: 27,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,821.20 : 68,731.80 = 18,119.20 : x
  2. Step 2: Convert to fraction form
    45,821.20/68,731.80 = 18,119.20/x
  3. Step 3: Cross multiply
    45,821.20x = 68,731.80 × 18,119.20
  4. Step 4: Simplify right side
    45,821.20x = 1,245,365,230.56
  5. Step 5: Solve for x
    x = 1,245,365,230.56/45,821.20
  6. Step 6: Final answer
    x = 27,178.80

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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.