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Finding the Fourth Proportional to 70,687.72, 97,551.30 and 38,857.96

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Solution

The fourth proportional to 70,687.72, 97,551.30 and 38,857.96 is: 53,625.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,687.72 : 97,551.30 = 38,857.96 : x
  2. Step 2: Convert to fraction form
    70,687.72/97,551.30 = 38,857.96/x
  3. Step 3: Cross multiply
    70,687.72x = 97,551.30 × 38,857.96
  4. Step 4: Simplify right side
    70,687.72x = 3,790,644,513.35
  5. Step 5: Solve for x
    x = 3,790,644,513.35/70,687.72
  6. Step 6: Final answer
    x = 53,625.22

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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.