Home / 68,470.20-102,705.30-40,822.20

Finding the Fourth Proportional to 68,470.20, 102,705.30 and 40,822.20

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Solution

The fourth proportional to 68,470.20, 102,705.30 and 40,822.20 is: 61,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,470.20 : 102,705.30 = 40,822.20 : x
  2. Step 2: Convert to fraction form
    68,470.20/102,705.30 = 40,822.20/x
  3. Step 3: Cross multiply
    68,470.20x = 102,705.30 × 40,822.20
  4. Step 4: Simplify right side
    68,470.20x = 4,192,656,297.66
  5. Step 5: Solve for x
    x = 4,192,656,297.66/68,470.20
  6. Step 6: Final answer
    x = 61,233.30

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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.