Home / 68,738.84-103,108.18-18,819.35

Finding the Fourth Proportional to 68,738.84, 103,108.18 and 18,819.35

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Solution

The fourth proportional to 68,738.84, 103,108.18 and 18,819.35 is: 28,229.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,738.84 : 103,108.18 = 18,819.35 : x
  2. Step 2: Convert to fraction form
    68,738.84/103,108.18 = 18,819.35/x
  3. Step 3: Cross multiply
    68,738.84x = 103,108.18 × 18,819.35
  4. Step 4: Simplify right side
    68,738.84x = 1,940,428,927.28
  5. Step 5: Solve for x
    x = 1,940,428,927.28/68,738.84
  6. Step 6: Final answer
    x = 28,229.00

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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.