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Finding the Fourth Proportional to 85,727.76, 128,625.36 and 26,568

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Solution

The fourth proportional to 85,727.76, 128,625.36 and 26,568 is: 39,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,727.76 : 128,625.36 = 26,568 : x
  2. Step 2: Convert to fraction form
    85,727.76/128,625.36 = 26,568/x
  3. Step 3: Cross multiply
    85,727.76x = 128,625.36 × 26,568
  4. Step 4: Simplify right side
    85,727.76x = 3,417,318,564.48
  5. Step 5: Solve for x
    x = 3,417,318,564.48/85,727.76
  6. Step 6: Final answer
    x = 39,862.45

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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.