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Finding the Fourth Proportional to 45,754.75, 68,630.07 and 12,474.79

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Solution

The fourth proportional to 45,754.75, 68,630.07 and 12,474.79 is: 18,711.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,754.75 : 68,630.07 = 12,474.79 : x
  2. Step 2: Convert to fraction form
    45,754.75/68,630.07 = 12,474.79/x
  3. Step 3: Cross multiply
    45,754.75x = 68,630.07 × 12,474.79
  4. Step 4: Simplify right side
    45,754.75x = 856,145,710.94
  5. Step 5: Solve for x
    x = 856,145,710.94/45,754.75
  6. Step 6: Final answer
    x = 18,711.62

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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.