Home / 68,653.24-102,981.10-18,738.52

Finding the Fourth Proportional to 68,653.24, 102,981.10 and 18,738.52

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Solution

The fourth proportional to 68,653.24, 102,981.10 and 18,738.52 is: 28,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,653.24 : 102,981.10 = 18,738.52 : x
  2. Step 2: Convert to fraction form
    68,653.24/102,981.10 = 18,738.52/x
  3. Step 3: Cross multiply
    68,653.24x = 102,981.10 × 18,738.52
  4. Step 4: Simplify right side
    68,653.24x = 1,929,713,401.97
  5. Step 5: Solve for x
    x = 1,929,713,401.97/68,653.24
  6. Step 6: Final answer
    x = 28,108.12

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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.