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Finding the Fourth Proportional to 68,578.41, 94,657.23 and 39,903.60

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Solution

The fourth proportional to 68,578.41, 94,657.23 and 39,903.60 is: 55,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,578.41 : 94,657.23 = 39,903.60 : x
  2. Step 2: Convert to fraction form
    68,578.41/94,657.23 = 39,903.60/x
  3. Step 3: Cross multiply
    68,578.41x = 94,657.23 × 39,903.60
  4. Step 4: Simplify right side
    68,578.41x = 3,777,164,243.03
  5. Step 5: Solve for x
    x = 3,777,164,243.03/68,578.41
  6. Step 6: Final answer
    x = 55,078.04

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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.