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Finding the Fourth Proportional to 81,773.64, 122,660.45 and 25,614.21

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Solution

The fourth proportional to 81,773.64, 122,660.45 and 25,614.21 is: 38,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,773.64 : 122,660.45 = 25,614.21 : x
  2. Step 2: Convert to fraction form
    81,773.64/122,660.45 = 25,614.21/x
  3. Step 3: Cross multiply
    81,773.64x = 122,660.45 × 25,614.21
  4. Step 4: Simplify right side
    81,773.64x = 3,141,850,396.92
  5. Step 5: Solve for x
    x = 3,141,850,396.92/81,773.64
  6. Step 6: Final answer
    x = 38,421.31

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1.5x scale

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.