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Finding the Fourth Proportional to 72,949.44, 109,422 and 30,250.56

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Solution

The fourth proportional to 72,949.44, 109,422 and 30,250.56 is: 45,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.44 : 109,422 = 30,250.56 : x
  2. Step 2: Convert to fraction form
    72,949.44/109,422 = 30,250.56/x
  3. Step 3: Cross multiply
    72,949.44x = 109,422 × 30,250.56
  4. Step 4: Simplify right side
    72,949.44x = 3,310,076,776.32
  5. Step 5: Solve for x
    x = 3,310,076,776.32/72,949.44
  6. Step 6: Final answer
    x = 45,374.94

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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.