Home / 76,623.19-114,934.79-21,219.19

Finding the Fourth Proportional to 76,623.19, 114,934.79 and 21,219.19

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Solution

The fourth proportional to 76,623.19, 114,934.79 and 21,219.19 is: 31,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,623.19 : 114,934.79 = 21,219.19 : x
  2. Step 2: Convert to fraction form
    76,623.19/114,934.79 = 21,219.19/x
  3. Step 3: Cross multiply
    76,623.19x = 114,934.79 × 21,219.19
  4. Step 4: Simplify right side
    76,623.19x = 2,438,822,912.33
  5. Step 5: Solve for x
    x = 2,438,822,912.33/76,623.19
  6. Step 6: Final answer
    x = 31,828.78

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Similar ratio
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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.