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Finding the Fourth Proportional to 36,659.39, 54,978.08 and 19,119.65

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Solution

The fourth proportional to 36,659.39, 54,978.08 and 19,119.65 is: 28,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,659.39 : 54,978.08 = 19,119.65 : x
  2. Step 2: Convert to fraction form
    36,659.39/54,978.08 = 19,119.65/x
  3. Step 3: Cross multiply
    36,659.39x = 54,978.08 × 19,119.65
  4. Step 4: Simplify right side
    36,659.39x = 1,051,161,276.78
  5. Step 5: Solve for x
    x = 1,051,161,276.78/36,659.39
  6. Step 6: Final answer
    x = 28,673.73

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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.