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Finding the Fourth Proportional to 65,885.64, 98,844.20 and 21,512.48

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Solution

The fourth proportional to 65,885.64, 98,844.20 and 21,512.48 is: 32,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.64 : 98,844.20 = 21,512.48 : x
  2. Step 2: Convert to fraction form
    65,885.64/98,844.20 = 21,512.48/x
  3. Step 3: Cross multiply
    65,885.64x = 98,844.20 × 21,512.48
  4. Step 4: Simplify right side
    65,885.64x = 2,126,383,875.62
  5. Step 5: Solve for x
    x = 2,126,383,875.62/65,885.64
  6. Step 6: Final answer
    x = 32,273.86

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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.