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Finding the Fourth Proportional to 68,707.80, 94,819.47 and 38,493.36

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Solution

The fourth proportional to 68,707.80, 94,819.47 and 38,493.36 is: 53,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.80 : 94,819.47 = 38,493.36 : x
  2. Step 2: Convert to fraction form
    68,707.80/94,819.47 = 38,493.36/x
  3. Step 3: Cross multiply
    68,707.80x = 94,819.47 × 38,493.36
  4. Step 4: Simplify right side
    68,707.80x = 3,649,919,993.72
  5. Step 5: Solve for x
    x = 3,649,919,993.72/68,707.80
  6. Step 6: Final answer
    x = 53,122.35

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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.