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Finding the Fourth Proportional to 65,761.60, 98,593.80 and 36,212.80

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Solution

The fourth proportional to 65,761.60, 98,593.80 and 36,212.80 is: 54,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.60 : 98,593.80 = 36,212.80 : x
  2. Step 2: Convert to fraction form
    65,761.60/98,593.80 = 36,212.80/x
  3. Step 3: Cross multiply
    65,761.60x = 98,593.80 × 36,212.80
  4. Step 4: Simplify right side
    65,761.60x = 3,570,357,560.64
  5. Step 5: Solve for x
    x = 3,570,357,560.64/65,761.60
  6. Step 6: Final answer
    x = 54,292.44

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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.