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Finding the Fourth Proportional to 75,906, 113,859 and 20,502

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Solution

The fourth proportional to 75,906, 113,859 and 20,502 is: 30,753

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,906 : 113,859 = 20,502 : x
  2. Step 2: Convert to fraction form
    75,906/113,859 = 20,502/x
  3. Step 3: Cross multiply
    75,906x = 113,859 × 20,502
  4. Step 4: Simplify right side
    75,906x = 2,334,337,218
  5. Step 5: Solve for x
    x = 2,334,337,218/75,906
  6. Step 6: Final answer
    x = 30,753

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.