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Finding the Fourth Proportional to 81,773.70, 122,660.54 and 25,614.28

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Solution

The fourth proportional to 81,773.70, 122,660.54 and 25,614.28 is: 38,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,773.70 : 122,660.54 = 25,614.28 : x
  2. Step 2: Convert to fraction form
    81,773.70/122,660.54 = 25,614.28/x
  3. Step 3: Cross multiply
    81,773.70x = 122,660.54 × 25,614.28
  4. Step 4: Simplify right side
    81,773.70x = 3,141,861,416.51
  5. Step 5: Solve for x
    x = 3,141,861,416.51/81,773.70
  6. Step 6: Final answer
    x = 38,421.42

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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.