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Finding the Fourth Proportional to 45,832.80, 68,716.80 and 20,884.80

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Solution

The fourth proportional to 45,832.80, 68,716.80 and 20,884.80 is: 31,312.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,832.80 : 68,716.80 = 20,884.80 : x
  2. Step 2: Convert to fraction form
    45,832.80/68,716.80 = 20,884.80/x
  3. Step 3: Cross multiply
    45,832.80x = 68,716.80 × 20,884.80
  4. Step 4: Simplify right side
    45,832.80x = 1,435,136,624.64
  5. Step 5: Solve for x
    x = 1,435,136,624.64/45,832.80
  6. Step 6: Final answer
    x = 31,312.44

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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.