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Finding the Fourth Proportional to 65,696.01, 98,481.67 and 21,291.56

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Solution

The fourth proportional to 65,696.01, 98,481.67 and 21,291.56 is: 31,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,696.01 : 98,481.67 = 21,291.56 : x
  2. Step 2: Convert to fraction form
    65,696.01/98,481.67 = 21,291.56/x
  3. Step 3: Cross multiply
    65,696.01x = 98,481.67 × 21,291.56
  4. Step 4: Simplify right side
    65,696.01x = 2,096,827,786.84
  5. Step 5: Solve for x
    x = 2,096,827,786.84/65,696.01
  6. Step 6: Final answer
    x = 31,917.13

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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.