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Finding the Fourth Proportional to 36,687.40, 55,031.10 and 19,162.60

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Solution

The fourth proportional to 36,687.40, 55,031.10 and 19,162.60 is: 28,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.40 : 55,031.10 = 19,162.60 : x
  2. Step 2: Convert to fraction form
    36,687.40/55,031.10 = 19,162.60/x
  3. Step 3: Cross multiply
    36,687.40x = 55,031.10 × 19,162.60
  4. Step 4: Simplify right side
    36,687.40x = 1,054,538,956.86
  5. Step 5: Solve for x
    x = 1,054,538,956.86/36,687.40
  6. Step 6: Final answer
    x = 28,743.90

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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.