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Finding the Fourth Proportional to 65,662.52, 90,351.80 and 63,825.44

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Solution

The fourth proportional to 65,662.52, 90,351.80 and 63,825.44 is: 87,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,662.52 : 90,351.80 = 63,825.44 : x
  2. Step 2: Convert to fraction form
    65,662.52/90,351.80 = 63,825.44/x
  3. Step 3: Cross multiply
    65,662.52x = 90,351.80 × 63,825.44
  4. Step 4: Simplify right side
    65,662.52x = 5,766,743,389.79
  5. Step 5: Solve for x
    x = 5,766,743,389.79/65,662.52
  6. Step 6: Final answer
    x = 87,823.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.