Home / 68,083.84-102,126.45-20,706.61

Finding the Fourth Proportional to 68,083.84, 102,126.45 and 20,706.61

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Solution

The fourth proportional to 68,083.84, 102,126.45 and 20,706.61 is: 31,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,083.84 : 102,126.45 = 20,706.61 : x
  2. Step 2: Convert to fraction form
    68,083.84/102,126.45 = 20,706.61/x
  3. Step 3: Cross multiply
    68,083.84x = 102,126.45 × 20,706.61
  4. Step 4: Simplify right side
    68,083.84x = 2,114,692,570.83
  5. Step 5: Solve for x
    x = 2,114,692,570.83/68,083.84
  6. Step 6: Final answer
    x = 31,060.12

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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.