Home / 68,772.49-103,159.10-31,306.36

Finding the Fourth Proportional to 68,772.49, 103,159.10 and 31,306.36

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Solution

The fourth proportional to 68,772.49, 103,159.10 and 31,306.36 is: 46,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,772.49 : 103,159.10 = 31,306.36 : x
  2. Step 2: Convert to fraction form
    68,772.49/103,159.10 = 31,306.36/x
  3. Step 3: Cross multiply
    68,772.49x = 103,159.10 × 31,306.36
  4. Step 4: Simplify right side
    68,772.49x = 3,229,536,087.72
  5. Step 5: Solve for x
    x = 3,229,536,087.72/68,772.49
  6. Step 6: Final answer
    x = 46,959.71

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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.