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Finding the Fourth Proportional to 65,967.92, 98,965.76 and 21,591.23

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Solution

The fourth proportional to 65,967.92, 98,965.76 and 21,591.23 is: 32,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,967.92 : 98,965.76 = 21,591.23 : x
  2. Step 2: Convert to fraction form
    65,967.92/98,965.76 = 21,591.23/x
  3. Step 3: Cross multiply
    65,967.92x = 98,965.76 × 21,591.23
  4. Step 4: Simplify right side
    65,967.92x = 2,136,792,486.28
  5. Step 5: Solve for x
    x = 2,136,792,486.28/65,967.92
  6. Step 6: Final answer
    x = 32,391.39

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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.