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Finding the Fourth Proportional to 81,866, 122,837.88 and 26,462

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Solution

The fourth proportional to 81,866, 122,837.88 and 26,462 is: 39,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,866 : 122,837.88 = 26,462 : x
  2. Step 2: Convert to fraction form
    81,866/122,837.88 = 26,462/x
  3. Step 3: Cross multiply
    81,866x = 122,837.88 × 26,462
  4. Step 4: Simplify right side
    81,866x = 3,250,535,980.56
  5. Step 5: Solve for x
    x = 3,250,535,980.56/81,866
  6. Step 6: Final answer
    x = 39,705.57

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