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Finding the Fourth Proportional to 45,990.36, 68,990.06 and 17,912.73

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Solution

The fourth proportional to 45,990.36, 68,990.06 and 17,912.73 is: 26,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,990.36 : 68,990.06 = 17,912.73 : x
  2. Step 2: Convert to fraction form
    45,990.36/68,990.06 = 17,912.73/x
  3. Step 3: Cross multiply
    45,990.36x = 68,990.06 × 17,912.73
  4. Step 4: Simplify right side
    45,990.36x = 1,235,800,227.90
  5. Step 5: Solve for x
    x = 1,235,800,227.90/45,990.36
  6. Step 6: Final answer
    x = 26,870.85

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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.