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Finding the Fourth Proportional to 74,203.86, 111,306 and 21,614.64

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Solution

The fourth proportional to 74,203.86, 111,306 and 21,614.64 is: 32,422.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,203.86 : 111,306 = 21,614.64 : x
  2. Step 2: Convert to fraction form
    74,203.86/111,306 = 21,614.64/x
  3. Step 3: Cross multiply
    74,203.86x = 111,306 × 21,614.64
  4. Step 4: Simplify right side
    74,203.86x = 2,405,839,119.84
  5. Step 5: Solve for x
    x = 2,405,839,119.84/74,203.86
  6. Step 6: Final answer
    x = 32,422.02

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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.