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Finding the Fourth Proportional to 36,611.20, 54,916.80 and 21,836.80

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Solution

The fourth proportional to 36,611.20, 54,916.80 and 21,836.80 is: 32,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,611.20 : 54,916.80 = 21,836.80 : x
  2. Step 2: Convert to fraction form
    36,611.20/54,916.80 = 21,836.80/x
  3. Step 3: Cross multiply
    36,611.20x = 54,916.80 × 21,836.80
  4. Step 4: Simplify right side
    36,611.20x = 1,199,207,178.24
  5. Step 5: Solve for x
    x = 1,199,207,178.24/36,611.20
  6. Step 6: Final answer
    x = 32,755.20

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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.