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Finding the Fourth Proportional to 26,858,788.80, 40,202,452.80 and 21,190,084.80

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Solution

The fourth proportional to 26,858,788.80, 40,202,452.80 and 21,190,084.80 is: 31,717,490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,858,788.80 : 40,202,452.80 = 21,190,084.80 : x
  2. Step 2: Convert to fraction form
    26,858,788.80/40,202,452.80 = 21,190,084.80/x
  3. Step 3: Cross multiply
    26,858,788.80x = 40,202,452.80 × 21,190,084.80
  4. Step 4: Simplify right side
    26,858,788.80x = 851,893,383,999,997.38
  5. Step 5: Solve for x
    x = 851,893,383,999,997.38/26,858,788.80
  6. Step 6: Final answer
    x = 31,717,490.70

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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.