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Finding the Fourth Proportional to 68,188.68, 94,078.80 and 39,884.04

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Solution

The fourth proportional to 68,188.68, 94,078.80 and 39,884.04 is: 55,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,188.68 : 94,078.80 = 39,884.04 : x
  2. Step 2: Convert to fraction form
    68,188.68/94,078.80 = 39,884.04/x
  3. Step 3: Cross multiply
    68,188.68x = 94,078.80 × 39,884.04
  4. Step 4: Simplify right side
    68,188.68x = 3,752,242,622.35
  5. Step 5: Solve for x
    x = 3,752,242,622.35/68,188.68
  6. Step 6: Final answer
    x = 55,027.35

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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.