Home / 68,028.08-102,042.33-20,643.56

Finding the Fourth Proportional to 68,028.08, 102,042.33 and 20,643.56

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Solution

The fourth proportional to 68,028.08, 102,042.33 and 20,643.56 is: 30,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,028.08 : 102,042.33 = 20,643.56 : x
  2. Step 2: Convert to fraction form
    68,028.08/102,042.33 = 20,643.56/x
  3. Step 3: Cross multiply
    68,028.08x = 102,042.33 × 20,643.56
  4. Step 4: Simplify right side
    68,028.08x = 2,106,516,400.07
  5. Step 5: Solve for x
    x = 2,106,516,400.07/68,028.08
  6. Step 6: Final answer
    x = 30,965.39

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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.