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Finding the Fourth Proportional to 65,439.84, 98,086.14 and 27,981.12

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Solution

The fourth proportional to 65,439.84, 98,086.14 and 27,981.12 is: 41,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,439.84 : 98,086.14 = 27,981.12 : x
  2. Step 2: Convert to fraction form
    65,439.84/98,086.14 = 27,981.12/x
  3. Step 3: Cross multiply
    65,439.84x = 98,086.14 × 27,981.12
  4. Step 4: Simplify right side
    65,439.84x = 2,744,560,053.68
  5. Step 5: Solve for x
    x = 2,744,560,053.68/65,439.84
  6. Step 6: Final answer
    x = 41,940.20

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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.