Home / 77,355.50-115,853.32-75,227.10

Finding the Fourth Proportional to 77,355.50, 115,853.32 and 75,227.10

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Solution

The fourth proportional to 77,355.50, 115,853.32 and 75,227.10 is: 112,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,355.50 : 115,853.32 = 75,227.10 : x
  2. Step 2: Convert to fraction form
    77,355.50/115,853.32 = 75,227.10/x
  3. Step 3: Cross multiply
    77,355.50x = 115,853.32 × 75,227.10
  4. Step 4: Simplify right side
    77,355.50x = 8,715,309,100.90
  5. Step 5: Solve for x
    x = 8,715,309,100.90/77,355.50
  6. Step 6: Final answer
    x = 112,665.68

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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.