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Finding the Fourth Proportional to 70,786.08, 97,684.81 and 38,954.98

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Solution

The fourth proportional to 70,786.08, 97,684.81 and 38,954.98 is: 53,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,786.08 : 97,684.81 = 38,954.98 : x
  2. Step 2: Convert to fraction form
    70,786.08/97,684.81 = 38,954.98/x
  3. Step 3: Cross multiply
    70,786.08x = 97,684.81 × 38,954.98
  4. Step 4: Simplify right side
    70,786.08x = 3,805,309,625.08
  5. Step 5: Solve for x
    x = 3,805,309,625.08/70,786.08
  6. Step 6: Final answer
    x = 53,757.88

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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.