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Finding the Fourth Proportional to 36,609.12, 54,913.68 and 8,906.88

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Solution

The fourth proportional to 36,609.12, 54,913.68 and 8,906.88 is: 13,360.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,609.12 : 54,913.68 = 8,906.88 : x
  2. Step 2: Convert to fraction form
    36,609.12/54,913.68 = 8,906.88/x
  3. Step 3: Cross multiply
    36,609.12x = 54,913.68 × 8,906.88
  4. Step 4: Simplify right side
    36,609.12x = 489,109,558.12
  5. Step 5: Solve for x
    x = 489,109,558.12/36,609.12
  6. Step 6: Final answer
    x = 13,360.32

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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.