Home / 74,568.06-102,905.82-40,578.39

Finding the Fourth Proportional to 74,568.06, 102,905.82 and 40,578.39

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Solution

The fourth proportional to 74,568.06, 102,905.82 and 40,578.39 is: 55,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,568.06 : 102,905.82 = 40,578.39 : x
  2. Step 2: Convert to fraction form
    74,568.06/102,905.82 = 40,578.39/x
  3. Step 3: Cross multiply
    74,568.06x = 102,905.82 × 40,578.39
  4. Step 4: Simplify right side
    74,568.06x = 4,175,752,497.23
  5. Step 5: Solve for x
    x = 4,175,752,497.23/74,568.06
  6. Step 6: Final answer
    x = 55,999.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.