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Finding the Fourth Proportional to 65,906.68, 98,865.44 and 21,532.44

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Solution

The fourth proportional to 65,906.68, 98,865.44 and 21,532.44 is: 32,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,906.68 : 98,865.44 = 21,532.44 : x
  2. Step 2: Convert to fraction form
    65,906.68/98,865.44 = 21,532.44/x
  3. Step 3: Cross multiply
    65,906.68x = 98,865.44 × 21,532.44
  4. Step 4: Simplify right side
    65,906.68x = 2,128,814,154.87
  5. Step 5: Solve for x
    x = 2,128,814,154.87/65,906.68
  6. Step 6: Final answer
    x = 32,300.43

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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.