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Finding the Fourth Proportional to 68,777.25, 94,914.05 and 38,969.25

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Solution

The fourth proportional to 68,777.25, 94,914.05 and 38,969.25 is: 53,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.25 : 94,914.05 = 38,969.25 : x
  2. Step 2: Convert to fraction form
    68,777.25/94,914.05 = 38,969.25/x
  3. Step 3: Cross multiply
    68,777.25x = 94,914.05 × 38,969.25
  4. Step 4: Simplify right side
    68,777.25x = 3,698,729,148.12
  5. Step 5: Solve for x
    x = 3,698,729,148.12/68,777.25
  6. Step 6: Final answer
    x = 53,778.38

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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.