Home / 76,839.24-115,258.86-20,679.48

Finding the Fourth Proportional to 76,839.24, 115,258.86 and 20,679.48

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Solution

The fourth proportional to 76,839.24, 115,258.86 and 20,679.48 is: 31,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,839.24 : 115,258.86 = 20,679.48 : x
  2. Step 2: Convert to fraction form
    76,839.24/115,258.86 = 20,679.48/x
  3. Step 3: Cross multiply
    76,839.24x = 115,258.86 × 20,679.48
  4. Step 4: Simplify right side
    76,839.24x = 2,383,492,713.90
  5. Step 5: Solve for x
    x = 2,383,492,713.90/76,839.24
  6. Step 6: Final answer
    x = 31,019.21

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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.