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Finding the Fourth Proportional to 65,366.16, 98,043.84 and 20,981.04

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Solution

The fourth proportional to 65,366.16, 98,043.84 and 20,981.04 is: 31,469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,366.16 : 98,043.84 = 20,981.04 : x
  2. Step 2: Convert to fraction form
    65,366.16/98,043.84 = 20,981.04/x
  3. Step 3: Cross multiply
    65,366.16x = 98,043.84 × 20,981.04
  4. Step 4: Simplify right side
    65,366.16x = 2,057,061,728.79
  5. Step 5: Solve for x
    x = 2,057,061,728.79/65,366.16
  6. Step 6: Final answer
    x = 31,469.83

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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.