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Finding the Fourth Proportional to 60,855.81, 91,291.41 and 20,882.58

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Solution

The fourth proportional to 60,855.81, 91,291.41 and 20,882.58 is: 31,326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,855.81 : 91,291.41 = 20,882.58 : x
  2. Step 2: Convert to fraction form
    60,855.81/91,291.41 = 20,882.58/x
  3. Step 3: Cross multiply
    60,855.81x = 91,291.41 × 20,882.58
  4. Step 4: Simplify right side
    60,855.81x = 1,906,400,172.64
  5. Step 5: Solve for x
    x = 1,906,400,172.64/60,855.81
  6. Step 6: Final answer
    x = 31,326.51

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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.