Home / 68,612.16-102,848.40-31,198.80

Finding the Fourth Proportional to 68,612.16, 102,848.40 and 31,198.80

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Solution

The fourth proportional to 68,612.16, 102,848.40 and 31,198.80 is: 46,766.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.16 : 102,848.40 = 31,198.80 : x
  2. Step 2: Convert to fraction form
    68,612.16/102,848.40 = 31,198.80/x
  3. Step 3: Cross multiply
    68,612.16x = 102,848.40 × 31,198.80
  4. Step 4: Simplify right side
    68,612.16x = 3,208,746,661.92
  5. Step 5: Solve for x
    x = 3,208,746,661.92/68,612.16
  6. Step 6: Final answer
    x = 46,766.44

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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.