Home / 75,515.78-113,327.94-28,137.40

Finding the Fourth Proportional to 75,515.78, 113,327.94 and 28,137.40

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Solution

The fourth proportional to 75,515.78, 113,327.94 and 28,137.40 is: 42,226.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,515.78 : 113,327.94 = 28,137.40 : x
  2. Step 2: Convert to fraction form
    75,515.78/113,327.94 = 28,137.40/x
  3. Step 3: Cross multiply
    75,515.78x = 113,327.94 × 28,137.40
  4. Step 4: Simplify right side
    75,515.78x = 3,188,753,578.96
  5. Step 5: Solve for x
    x = 3,188,753,578.96/75,515.78
  6. Step 6: Final answer
    x = 42,226.32

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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.