Home / 68,344.32-102,519.56-20,955.95

Finding the Fourth Proportional to 68,344.32, 102,519.56 and 20,955.95

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Solution

The fourth proportional to 68,344.32, 102,519.56 and 20,955.95 is: 31,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,344.32 : 102,519.56 = 20,955.95 : x
  2. Step 2: Convert to fraction form
    68,344.32/102,519.56 = 20,955.95/x
  3. Step 3: Cross multiply
    68,344.32x = 102,519.56 × 20,955.95
  4. Step 4: Simplify right side
    68,344.32x = 2,148,394,260.78
  5. Step 5: Solve for x
    x = 2,148,394,260.78/68,344.32
  6. Step 6: Final answer
    x = 31,434.86

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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.