Home / 31,778,161.92-43,858,330.47-18,551,676.78

Finding the Fourth Proportional to 31,778,161.92, 43,858,330.47 and 18,551,676.78

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Solution

The fourth proportional to 31,778,161.92, 43,858,330.47 and 18,551,676.78 is: 25,603,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778,161.92 : 43,858,330.47 = 18,551,676.78 : x
  2. Step 2: Convert to fraction form
    31,778,161.92/43,858,330.47 = 18,551,676.78/x
  3. Step 3: Cross multiply
    31,778,161.92x = 43,858,330.47 × 18,551,676.78
  4. Step 4: Simplify right side
    31,778,161.92x = 813,645,570,989,865.50
  5. Step 5: Solve for x
    x = 813,645,570,989,865.50/31,778,161.92
  6. Step 6: Final answer
    x = 25,603,921.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.