Home / 68,448.40-102,672.24-31,021.36

Finding the Fourth Proportional to 68,448.40, 102,672.24 and 31,021.36

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Solution

The fourth proportional to 68,448.40, 102,672.24 and 31,021.36 is: 46,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,448.40 : 102,672.24 = 31,021.36 : x
  2. Step 2: Convert to fraction form
    68,448.40/102,672.24 = 31,021.36/x
  3. Step 3: Cross multiply
    68,448.40x = 102,672.24 × 31,021.36
  4. Step 4: Simplify right side
    68,448.40x = 3,185,032,519.05
  5. Step 5: Solve for x
    x = 3,185,032,519.05/68,448.40
  6. Step 6: Final answer
    x = 46,531.88

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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.