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Finding the Fourth Proportional to 45,491.64, 68,244.78 and 19,200.30

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Solution

The fourth proportional to 45,491.64, 68,244.78 and 19,200.30 is: 28,803.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,491.64 : 68,244.78 = 19,200.30 : x
  2. Step 2: Convert to fraction form
    45,491.64/68,244.78 = 19,200.30/x
  3. Step 3: Cross multiply
    45,491.64x = 68,244.78 × 19,200.30
  4. Step 4: Simplify right side
    45,491.64x = 1,310,320,249.43
  5. Step 5: Solve for x
    x = 1,310,320,249.43/45,491.64
  6. Step 6: Final answer
    x = 28,803.54

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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.