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Finding the Fourth Proportional to 45,906.20, 68,859.30 and 43,719.20

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Solution

The fourth proportional to 45,906.20, 68,859.30 and 43,719.20 is: 65,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,906.20 : 68,859.30 = 43,719.20 : x
  2. Step 2: Convert to fraction form
    45,906.20/68,859.30 = 43,719.20/x
  3. Step 3: Cross multiply
    45,906.20x = 68,859.30 × 43,719.20
  4. Step 4: Simplify right side
    45,906.20x = 3,010,473,508.56
  5. Step 5: Solve for x
    x = 3,010,473,508.56/45,906.20
  6. Step 6: Final answer
    x = 65,578.80

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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.