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Finding the Fourth Proportional to 45,825.75, 68,739.03 and 18,123.75

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Solution

The fourth proportional to 45,825.75, 68,739.03 and 18,123.75 is: 27,185.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,825.75 : 68,739.03 = 18,123.75 : x
  2. Step 2: Convert to fraction form
    45,825.75/68,739.03 = 18,123.75/x
  3. Step 3: Cross multiply
    45,825.75x = 68,739.03 × 18,123.75
  4. Step 4: Simplify right side
    45,825.75x = 1,245,808,994.96
  5. Step 5: Solve for x
    x = 1,245,808,994.96/45,825.75
  6. Step 6: Final answer
    x = 27,185.79

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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.