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Finding the Fourth Proportional to 36,686, 50,627.76 and 19,920.08

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Solution

The fourth proportional to 36,686, 50,627.76 and 19,920.08 is: 27,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,686 : 50,627.76 = 19,920.08 : x
  2. Step 2: Convert to fraction form
    36,686/50,627.76 = 19,920.08/x
  3. Step 3: Cross multiply
    36,686x = 50,627.76 × 19,920.08
  4. Step 4: Simplify right side
    36,686x = 1,008,509,029.42
  5. Step 5: Solve for x
    x = 1,008,509,029.42/36,686
  6. Step 6: Final answer
    x = 27,490.30

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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.