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Finding the Fourth Proportional to 36,770.52, 55,068 and 21,155.32

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Solution

The fourth proportional to 36,770.52, 55,068 and 21,155.32 is: 31,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,770.52 : 55,068 = 21,155.32 : x
  2. Step 2: Convert to fraction form
    36,770.52/55,068 = 21,155.32/x
  3. Step 3: Cross multiply
    36,770.52x = 55,068 × 21,155.32
  4. Step 4: Simplify right side
    36,770.52x = 1,164,981,161.76
  5. Step 5: Solve for x
    x = 1,164,981,161.76/36,770.52
  6. Step 6: Final answer
    x = 31,682.48

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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.