Home / 30,315,991.72-45,474,348.39-8,455,040.82

Finding the Fourth Proportional to 30,315,991.72, 45,474,348.39 and 8,455,040.82

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Solution

The fourth proportional to 30,315,991.72, 45,474,348.39 and 8,455,040.82 is: 12,682,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315,991.72 : 45,474,348.39 = 8,455,040.82 : x
  2. Step 2: Convert to fraction form
    30,315,991.72/45,474,348.39 = 8,455,040.82/x
  3. Step 3: Cross multiply
    30,315,991.72x = 45,474,348.39 × 8,455,040.82
  4. Step 4: Simplify right side
    30,315,991.72x = 384,487,471,900,351.31
  5. Step 5: Solve for x
    x = 384,487,471,900,351.31/30,315,991.72
  6. Step 6: Final answer
    x = 12,682,661.86

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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.