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Finding the Fourth Proportional to 65,231.40, 97,847.10 and 57,714.60

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Solution

The fourth proportional to 65,231.40, 97,847.10 and 57,714.60 is: 86,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,231.40 : 97,847.10 = 57,714.60 : x
  2. Step 2: Convert to fraction form
    65,231.40/97,847.10 = 57,714.60/x
  3. Step 3: Cross multiply
    65,231.40x = 97,847.10 × 57,714.60
  4. Step 4: Simplify right side
    65,231.40x = 5,647,206,237.66
  5. Step 5: Solve for x
    x = 5,647,206,237.66/65,231.40
  6. Step 6: Final answer
    x = 86,571.90

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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.