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Finding the Fourth Proportional to 45,292.87, 67,942.65 and 12,012.20

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Solution

The fourth proportional to 45,292.87, 67,942.65 and 12,012.20 is: 18,019.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,292.87 : 67,942.65 = 12,012.20 : x
  2. Step 2: Convert to fraction form
    45,292.87/67,942.65 = 12,012.20/x
  3. Step 3: Cross multiply
    45,292.87x = 67,942.65 × 12,012.20
  4. Step 4: Simplify right side
    45,292.87x = 816,140,592.88
  5. Step 5: Solve for x
    x = 816,140,592.88/45,292.87
  6. Step 6: Final answer
    x = 18,019.18

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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.