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Finding the Fourth Proportional to 27,317,487.80, 40,978,305.30 and 8,146,748.60

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Solution

The fourth proportional to 27,317,487.80, 40,978,305.30 and 8,146,748.60 is: 12,220,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,317,487.80 : 40,978,305.30 = 8,146,748.60 : x
  2. Step 2: Convert to fraction form
    27,317,487.80/40,978,305.30 = 8,146,748.60/x
  3. Step 3: Cross multiply
    27,317,487.80x = 40,978,305.30 × 8,146,748.60
  4. Step 4: Simplify right side
    27,317,487.80x = 333,839,951,333,147.56
  5. Step 5: Solve for x
    x = 333,839,951,333,147.56/27,317,487.80
  6. Step 6: Final answer
    x = 12,220,741.30

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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.