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Finding the Fourth Proportional to 68,840.38, 94,991.94 and 38,619.42

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Solution

The fourth proportional to 68,840.38, 94,991.94 and 38,619.42 is: 53,290.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,840.38 : 94,991.94 = 38,619.42 : x
  2. Step 2: Convert to fraction form
    68,840.38/94,991.94 = 38,619.42/x
  3. Step 3: Cross multiply
    68,840.38x = 94,991.94 × 38,619.42
  4. Step 4: Simplify right side
    68,840.38x = 3,668,533,627.47
  5. Step 5: Solve for x
    x = 3,668,533,627.47/68,840.38
  6. Step 6: Final answer
    x = 53,290.43

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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.