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Finding the Fourth Proportional to 65,968.18, 98,966.14 and 21,591.48

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Solution

The fourth proportional to 65,968.18, 98,966.14 and 21,591.48 is: 32,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,968.18 : 98,966.14 = 21,591.48 : x
  2. Step 2: Convert to fraction form
    65,968.18/98,966.14 = 21,591.48/x
  3. Step 3: Cross multiply
    65,968.18x = 98,966.14 × 21,591.48
  4. Step 4: Simplify right side
    65,968.18x = 2,136,825,432.49
  5. Step 5: Solve for x
    x = 2,136,825,432.49/65,968.18
  6. Step 6: Final answer
    x = 32,391.76

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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.