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Finding the Fourth Proportional to 45,891.53, 68,809.60 and 20,586.43

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Solution

The fourth proportional to 45,891.53, 68,809.60 and 20,586.43 is: 30,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,891.53 : 68,809.60 = 20,586.43 : x
  2. Step 2: Convert to fraction form
    45,891.53/68,809.60 = 20,586.43/x
  3. Step 3: Cross multiply
    45,891.53x = 68,809.60 × 20,586.43
  4. Step 4: Simplify right side
    45,891.53x = 1,416,544,013.73
  5. Step 5: Solve for x
    x = 1,416,544,013.73/45,891.53
  6. Step 6: Final answer
    x = 30,867.22

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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.