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Finding the Fourth Proportional to 36,778.40, 55,225.20 and 21,226.40

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Solution

The fourth proportional to 36,778.40, 55,225.20 and 21,226.40 is: 31,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,778.40 : 55,225.20 = 21,226.40 : x
  2. Step 2: Convert to fraction form
    36,778.40/55,225.20 = 21,226.40/x
  3. Step 3: Cross multiply
    36,778.40x = 55,225.20 × 21,226.40
  4. Step 4: Simplify right side
    36,778.40x = 1,172,232,185.28
  5. Step 5: Solve for x
    x = 1,172,232,185.28/36,778.40
  6. Step 6: Final answer
    x = 31,872.84

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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.