Home / 77,621.57-116,513.78-68,793.38

Finding the Fourth Proportional to 77,621.57, 116,513.78 and 68,793.38

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Solution

The fourth proportional to 77,621.57, 116,513.78 and 68,793.38 is: 103,262.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,621.57 : 116,513.78 = 68,793.38 : x
  2. Step 2: Convert to fraction form
    77,621.57/116,513.78 = 68,793.38/x
  3. Step 3: Cross multiply
    77,621.57x = 116,513.78 × 68,793.38
  4. Step 4: Simplify right side
    77,621.57x = 8,015,375,816.24
  5. Step 5: Solve for x
    x = 8,015,375,816.24/77,621.57
  6. Step 6: Final answer
    x = 103,262.23

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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.