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Finding the Fourth Proportional to 43,936.40, 65,861.40 and 21,753.20

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Solution

The fourth proportional to 43,936.40, 65,861.40 and 21,753.20 is: 32,608.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,936.40 : 65,861.40 = 21,753.20 : x
  2. Step 2: Convert to fraction form
    43,936.40/65,861.40 = 21,753.20/x
  3. Step 3: Cross multiply
    43,936.40x = 65,861.40 × 21,753.20
  4. Step 4: Simplify right side
    43,936.40x = 1,432,696,206.48
  5. Step 5: Solve for x
    x = 1,432,696,206.48/43,936.40
  6. Step 6: Final answer
    x = 32,608.41

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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.