Home / 68,025.89-102,039.07-20,641.38

Finding the Fourth Proportional to 68,025.89, 102,039.07 and 20,641.38

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Solution

The fourth proportional to 68,025.89, 102,039.07 and 20,641.38 is: 30,962.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,025.89 : 102,039.07 = 20,641.38 : x
  2. Step 2: Convert to fraction form
    68,025.89/102,039.07 = 20,641.38/x
  3. Step 3: Cross multiply
    68,025.89x = 102,039.07 × 20,641.38
  4. Step 4: Simplify right side
    68,025.89x = 2,106,227,081.54
  5. Step 5: Solve for x
    x = 2,106,227,081.54/68,025.89
  6. Step 6: Final answer
    x = 30,962.14

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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.