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Finding the Fourth Proportional to 65,747.60, 98,621.40 and 54,812.60

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Solution

The fourth proportional to 65,747.60, 98,621.40 and 54,812.60 is: 82,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,747.60 : 98,621.40 = 54,812.60 : x
  2. Step 2: Convert to fraction form
    65,747.60/98,621.40 = 54,812.60/x
  3. Step 3: Cross multiply
    65,747.60x = 98,621.40 × 54,812.60
  4. Step 4: Simplify right side
    65,747.60x = 5,405,695,349.64
  5. Step 5: Solve for x
    x = 5,405,695,349.64/65,747.60
  6. Step 6: Final answer
    x = 82,218.90

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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.