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Finding the Fourth Proportional to 68,170.89, 94,074.71 and 39,881.37

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Solution

The fourth proportional to 68,170.89, 94,074.71 and 39,881.37 is: 55,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,170.89 : 94,074.71 = 39,881.37 : x
  2. Step 2: Convert to fraction form
    68,170.89/94,074.71 = 39,881.37/x
  3. Step 3: Cross multiply
    68,170.89x = 94,074.71 × 39,881.37
  4. Step 4: Simplify right side
    68,170.89x = 3,751,828,117.75
  5. Step 5: Solve for x
    x = 3,751,828,117.75/68,170.89
  6. Step 6: Final answer
    x = 55,035.63

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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.