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Finding the Fourth Proportional to 73,153.20, 109,729.80 and 20,562.68

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Solution

The fourth proportional to 73,153.20, 109,729.80 and 20,562.68 is: 30,844.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,153.20 : 109,729.80 = 20,562.68 : x
  2. Step 2: Convert to fraction form
    73,153.20/109,729.80 = 20,562.68/x
  3. Step 3: Cross multiply
    73,153.20x = 109,729.80 × 20,562.68
  4. Step 4: Simplify right side
    73,153.20x = 2,256,339,192.50
  5. Step 5: Solve for x
    x = 2,256,339,192.50/73,153.20
  6. Step 6: Final answer
    x = 30,844.03

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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.