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Finding the Fourth Proportional to 74,230.43, 111,311.01 and 21,629.43

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Solution

The fourth proportional to 74,230.43, 111,311.01 and 21,629.43 is: 32,434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,230.43 : 111,311.01 = 21,629.43 : x
  2. Step 2: Convert to fraction form
    74,230.43/111,311.01 = 21,629.43/x
  3. Step 3: Cross multiply
    74,230.43x = 111,311.01 × 21,629.43
  4. Step 4: Simplify right side
    74,230.43x = 2,407,593,699.02
  5. Step 5: Solve for x
    x = 2,407,593,699.02/74,230.43
  6. Step 6: Final answer
    x = 32,434.06

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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.