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Finding the Fourth Proportional to 45,900.75, 68,850.27 and 12,620.67

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Solution

The fourth proportional to 45,900.75, 68,850.27 and 12,620.67 is: 18,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,900.75 : 68,850.27 = 12,620.67 : x
  2. Step 2: Convert to fraction form
    45,900.75/68,850.27 = 12,620.67/x
  3. Step 3: Cross multiply
    45,900.75x = 68,850.27 × 12,620.67
  4. Step 4: Simplify right side
    45,900.75x = 868,936,537.08
  5. Step 5: Solve for x
    x = 868,936,537.08/45,900.75
  6. Step 6: Final answer
    x = 18,930.77

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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.