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Finding the Fourth Proportional to 36,700.99, 50,650.64 and 20,786.47

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Solution

The fourth proportional to 36,700.99, 50,650.64 and 20,786.47 is: 28,687.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,700.99 : 50,650.64 = 20,786.47 : x
  2. Step 2: Convert to fraction form
    36,700.99/50,650.64 = 20,786.47/x
  3. Step 3: Cross multiply
    36,700.99x = 50,650.64 × 20,786.47
  4. Step 4: Simplify right side
    36,700.99x = 1,052,848,008.84
  5. Step 5: Solve for x
    x = 1,052,848,008.84/36,700.99
  6. Step 6: Final answer
    x = 28,687.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.