Home / 68,022.43-102,017.25-21,275.32

Finding the Fourth Proportional to 68,022.43, 102,017.25 and 21,275.32

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Solution

The fourth proportional to 68,022.43, 102,017.25 and 21,275.32 is: 31,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,022.43 : 102,017.25 = 21,275.32 : x
  2. Step 2: Convert to fraction form
    68,022.43/102,017.25 = 21,275.32/x
  3. Step 3: Cross multiply
    68,022.43x = 102,017.25 × 21,275.32
  4. Step 4: Simplify right side
    68,022.43x = 2,170,449,639.27
  5. Step 5: Solve for x
    x = 2,170,449,639.27/68,022.43
  6. Step 6: Final answer
    x = 31,907.85

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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.