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Finding the Fourth Proportional to 81,374.56, 122,079.26 and 25,213.42

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Solution

The fourth proportional to 81,374.56, 122,079.26 and 25,213.42 is: 37,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.56 : 122,079.26 = 25,213.42 : x
  2. Step 2: Convert to fraction form
    81,374.56/122,079.26 = 25,213.42/x
  3. Step 3: Cross multiply
    81,374.56x = 122,079.26 × 25,213.42
  4. Step 4: Simplify right side
    81,374.56x = 3,078,035,529.60
  5. Step 5: Solve for x
    x = 3,078,035,529.60/81,374.56
  6. Step 6: Final answer
    x = 37,825.53

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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.