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Finding the Fourth Proportional to 84,795,991.80, 127,193,987.70 and 30,270,145.20

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Solution

The fourth proportional to 84,795,991.80, 127,193,987.70 and 30,270,145.20 is: 45,405,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,795,991.80 : 127,193,987.70 = 30,270,145.20 : x
  2. Step 2: Convert to fraction form
    84,795,991.80/127,193,987.70 = 30,270,145.20/x
  3. Step 3: Cross multiply
    84,795,991.80x = 127,193,987.70 × 30,270,145.20
  4. Step 4: Simplify right side
    84,795,991.80x = 3,850,180,476,246,014
  5. Step 5: Solve for x
    x = 3,850,180,476,246,014/84,795,991.80
  6. Step 6: Final answer
    x = 45,405,217.80

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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.