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Finding the Fourth Proportional to 55,049,374.80, 82,571,437.80 and 18,654,195.60

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Solution

The fourth proportional to 55,049,374.80, 82,571,437.80 and 18,654,195.60 is: 27,980,404.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,049,374.80 : 82,571,437.80 = 18,654,195.60 : x
  2. Step 2: Convert to fraction form
    55,049,374.80/82,571,437.80 = 18,654,195.60/x
  3. Step 3: Cross multiply
    55,049,374.80x = 82,571,437.80 × 18,654,195.60
  4. Step 4: Simplify right side
    55,049,374.80x = 1,540,303,751,694,433.75
  5. Step 5: Solve for x
    x = 1,540,303,751,694,433.75/55,049,374.80
  6. Step 6: Final answer
    x = 27,980,404.09

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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.