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Finding the Fourth Proportional to 65,982.98, 98,979.10 and 26,540.28

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Solution

The fourth proportional to 65,982.98, 98,979.10 and 26,540.28 is: 39,812.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,982.98 : 98,979.10 = 26,540.28 : x
  2. Step 2: Convert to fraction form
    65,982.98/98,979.10 = 26,540.28/x
  3. Step 3: Cross multiply
    65,982.98x = 98,979.10 × 26,540.28
  4. Step 4: Simplify right side
    65,982.98x = 2,626,932,961.80
  5. Step 5: Solve for x
    x = 2,626,932,961.80/65,982.98
  6. Step 6: Final answer
    x = 39,812.28

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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.