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Finding the Fourth Proportional to 44,602.20, 66,872.88 and 21,231

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Solution

The fourth proportional to 44,602.20, 66,872.88 and 21,231 is: 31,832.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,602.20 : 66,872.88 = 21,231 : x
  2. Step 2: Convert to fraction form
    44,602.20/66,872.88 = 21,231/x
  3. Step 3: Cross multiply
    44,602.20x = 66,872.88 × 21,231
  4. Step 4: Simplify right side
    44,602.20x = 1,419,778,115.28
  5. Step 5: Solve for x
    x = 1,419,778,115.28/44,602.20
  6. Step 6: Final answer
    x = 31,832.02

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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.