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Finding the Fourth Proportional to 87,863.40, 131,795.10 and 64,535.40

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Solution

The fourth proportional to 87,863.40, 131,795.10 and 64,535.40 is: 96,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,863.40 : 131,795.10 = 64,535.40 : x
  2. Step 2: Convert to fraction form
    87,863.40/131,795.10 = 64,535.40/x
  3. Step 3: Cross multiply
    87,863.40x = 131,795.10 × 64,535.40
  4. Step 4: Simplify right side
    87,863.40x = 8,505,449,496.54
  5. Step 5: Solve for x
    x = 8,505,449,496.54/87,863.40
  6. Step 6: Final answer
    x = 96,803.10

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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.