Home / 68,079.83-102,120.46-20,702.62

Finding the Fourth Proportional to 68,079.83, 102,120.46 and 20,702.62

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Solution

The fourth proportional to 68,079.83, 102,120.46 and 20,702.62 is: 31,054.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,079.83 : 102,120.46 = 20,702.62 : x
  2. Step 2: Convert to fraction form
    68,079.83/102,120.46 = 20,702.62/x
  3. Step 3: Cross multiply
    68,079.83x = 102,120.46 × 20,702.62
  4. Step 4: Simplify right side
    68,079.83x = 2,114,161,269.95
  5. Step 5: Solve for x
    x = 2,114,161,269.95/68,079.83
  6. Step 6: Final answer
    x = 31,054.15

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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.