Home / 76,640.23-114,960.39-21,236.23

Finding the Fourth Proportional to 76,640.23, 114,960.39 and 21,236.23

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Solution

The fourth proportional to 76,640.23, 114,960.39 and 21,236.23 is: 31,854.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640.23 : 114,960.39 = 21,236.23 : x
  2. Step 2: Convert to fraction form
    76,640.23/114,960.39 = 21,236.23/x
  3. Step 3: Cross multiply
    76,640.23x = 114,960.39 × 21,236.23
  4. Step 4: Simplify right side
    76,640.23x = 2,441,325,282.93
  5. Step 5: Solve for x
    x = 2,441,325,282.93/76,640.23
  6. Step 6: Final answer
    x = 31,854.36

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1.5x scale

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.