Home / 68,220.78-94,147.28-39,541.38

Finding the Fourth Proportional to 68,220.78, 94,147.28 and 39,541.38

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Solution

The fourth proportional to 68,220.78, 94,147.28 and 39,541.38 is: 54,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220.78 : 94,147.28 = 39,541.38 : x
  2. Step 2: Convert to fraction form
    68,220.78/94,147.28 = 39,541.38/x
  3. Step 3: Cross multiply
    68,220.78x = 94,147.28 × 39,541.38
  4. Step 4: Simplify right side
    68,220.78x = 3,722,713,374.45
  5. Step 5: Solve for x
    x = 3,722,713,374.45/68,220.78
  6. Step 6: Final answer
    x = 54,568.61

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1.5x scale

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.