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Finding the Fourth Proportional to 36,743.88, 55,066.32 and 20,078.88

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Solution

The fourth proportional to 36,743.88, 55,066.32 and 20,078.88 is: 30,091.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,743.88 : 55,066.32 = 20,078.88 : x
  2. Step 2: Convert to fraction form
    36,743.88/55,066.32 = 20,078.88/x
  3. Step 3: Cross multiply
    36,743.88x = 55,066.32 × 20,078.88
  4. Step 4: Simplify right side
    36,743.88x = 1,105,670,031.32
  5. Step 5: Solve for x
    x = 1,105,670,031.32/36,743.88
  6. Step 6: Final answer
    x = 30,091.27

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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.