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Finding the Fourth Proportional to 65,680.50, 98,495.24 and 21,296.55

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Solution

The fourth proportional to 65,680.50, 98,495.24 and 21,296.55 is: 31,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.50 : 98,495.24 = 21,296.55 : x
  2. Step 2: Convert to fraction form
    65,680.50/98,495.24 = 21,296.55/x
  3. Step 3: Cross multiply
    65,680.50x = 98,495.24 × 21,296.55
  4. Step 4: Simplify right side
    65,680.50x = 2,097,608,696.94
  5. Step 5: Solve for x
    x = 2,097,608,696.94/65,680.50
  6. Step 6: Final answer
    x = 31,936.55

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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.