Home / 75,979.45-113,985.56-40,910.95

Finding the Fourth Proportional to 75,979.45, 113,985.56 and 40,910.95

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Solution

The fourth proportional to 75,979.45, 113,985.56 and 40,910.95 is: 61,375.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,979.45 : 113,985.56 = 40,910.95 : x
  2. Step 2: Convert to fraction form
    75,979.45/113,985.56 = 40,910.95/x
  3. Step 3: Cross multiply
    75,979.45x = 113,985.56 × 40,910.95
  4. Step 4: Simplify right side
    75,979.45x = 4,663,257,545.88
  5. Step 5: Solve for x
    x = 4,663,257,545.88/75,979.45
  6. Step 6: Final answer
    x = 61,375.25

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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.