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Finding the Fourth Proportional to 65,839.78, 98,771.96 and 26,399.98

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Solution

The fourth proportional to 65,839.78, 98,771.96 and 26,399.98 is: 39,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,839.78 : 98,771.96 = 26,399.98 : x
  2. Step 2: Convert to fraction form
    65,839.78/98,771.96 = 26,399.98/x
  3. Step 3: Cross multiply
    65,839.78x = 98,771.96 × 26,399.98
  4. Step 4: Simplify right side
    65,839.78x = 2,607,577,768.56
  5. Step 5: Solve for x
    x = 2,607,577,768.56/65,839.78
  6. Step 6: Final answer
    x = 39,604.90

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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.