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Finding the Fourth Proportional to 45,219.92, 67,764.12 and 21,818.96

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Solution

The fourth proportional to 45,219.92, 67,764.12 and 21,818.96 is: 32,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,219.92 : 67,764.12 = 21,818.96 : x
  2. Step 2: Convert to fraction form
    45,219.92/67,764.12 = 21,818.96/x
  3. Step 3: Cross multiply
    45,219.92x = 67,764.12 × 21,818.96
  4. Step 4: Simplify right side
    45,219.92x = 1,478,542,623.72
  5. Step 5: Solve for x
    x = 1,478,542,623.72/45,219.92
  6. Step 6: Final answer
    x = 32,696.71

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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.