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Finding the Fourth Proportional to 81,652, 122,478 and 26,248

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Solution

The fourth proportional to 81,652, 122,478 and 26,248 is: 39,372

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,652 : 122,478 = 26,248 : x
  2. Step 2: Convert to fraction form
    81,652/122,478 = 26,248/x
  3. Step 3: Cross multiply
    81,652x = 122,478 × 26,248
  4. Step 4: Simplify right side
    81,652x = 3,214,802,544
  5. Step 5: Solve for x
    x = 3,214,802,544/81,652
  6. Step 6: Final answer
    x = 39,372

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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.