Home / 68,946.31-103,323.78-31,414.66

Finding the Fourth Proportional to 68,946.31, 103,323.78 and 31,414.66

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Solution

The fourth proportional to 68,946.31, 103,323.78 and 31,414.66 is: 47,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,946.31 : 103,323.78 = 31,414.66 : x
  2. Step 2: Convert to fraction form
    68,946.31/103,323.78 = 31,414.66/x
  3. Step 3: Cross multiply
    68,946.31x = 103,323.78 × 31,414.66
  4. Step 4: Simplify right side
    68,946.31x = 3,245,881,160.31
  5. Step 5: Solve for x
    x = 3,245,881,160.31/68,946.31
  6. Step 6: Final answer
    x = 47,078.39

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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.