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Finding the Fourth Proportional to 80,997.84, 121,487.58 and 21,839.22

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Solution

The fourth proportional to 80,997.84, 121,487.58 and 21,839.22 is: 32,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.84 : 121,487.58 = 21,839.22 : x
  2. Step 2: Convert to fraction form
    80,997.84/121,487.58 = 21,839.22/x
  3. Step 3: Cross multiply
    80,997.84x = 121,487.58 × 21,839.22
  4. Step 4: Simplify right side
    80,997.84x = 2,653,193,986.89
  5. Step 5: Solve for x
    x = 2,653,193,986.89/80,997.84
  6. Step 6: Final answer
    x = 32,756.35

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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.