Home / 81,873,886.20-122,474,906.10-73,811,729.40

Finding the Fourth Proportional to 81,873,886.20, 122,474,906.10 and 73,811,729.40

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Solution

The fourth proportional to 81,873,886.20, 122,474,906.10 and 73,811,729.40 is: 110,414,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,873,886.20 : 122,474,906.10 = 73,811,729.40 : x
  2. Step 2: Convert to fraction form
    81,873,886.20/122,474,906.10 = 73,811,729.40/x
  3. Step 3: Cross multiply
    81,873,886.20x = 122,474,906.10 × 73,811,729.40
  4. Step 4: Simplify right side
    81,873,886.20x = 9,040,084,627,343,610
  5. Step 5: Solve for x
    x = 9,040,084,627,343,610/81,873,886.20
  6. Step 6: Final answer
    x = 110,414,749.40

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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.