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Finding the Fourth Proportional to 85,297.68, 127,974.81 and 26,133.93

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Solution

The fourth proportional to 85,297.68, 127,974.81 and 26,133.93 is: 39,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.68 : 127,974.81 = 26,133.93 : x
  2. Step 2: Convert to fraction form
    85,297.68/127,974.81 = 26,133.93/x
  3. Step 3: Cross multiply
    85,297.68x = 127,974.81 × 26,133.93
  4. Step 4: Simplify right side
    85,297.68x = 3,344,484,726.30
  5. Step 5: Solve for x
    x = 3,344,484,726.30/85,297.68
  6. Step 6: Final answer
    x = 39,209.56

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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.