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Finding the Fourth Proportional to 18,494,968.40, 27,744,202.20 and 5,031,796.40

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Solution

The fourth proportional to 18,494,968.40, 27,744,202.20 and 5,031,796.40 is: 7,548,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494,968.40 : 27,744,202.20 = 5,031,796.40 : x
  2. Step 2: Convert to fraction form
    18,494,968.40/27,744,202.20 = 5,031,796.40/x
  3. Step 3: Cross multiply
    18,494,968.40x = 27,744,202.20 × 5,031,796.40
  4. Step 4: Simplify right side
    18,494,968.40x = 139,603,176,750,832.09
  5. Step 5: Solve for x
    x = 139,603,176,750,832.09/18,494,968.40
  6. Step 6: Final answer
    x = 7,548,170.60

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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.