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Finding the Fourth Proportional to 45,371.70, 68,028.39 and 21,666.42

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Solution

The fourth proportional to 45,371.70, 68,028.39 and 21,666.42 is: 32,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.70 : 68,028.39 = 21,666.42 : x
  2. Step 2: Convert to fraction form
    45,371.70/68,028.39 = 21,666.42/x
  3. Step 3: Cross multiply
    45,371.70x = 68,028.39 × 21,666.42
  4. Step 4: Simplify right side
    45,371.70x = 1,473,931,669.66
  5. Step 5: Solve for x
    x = 1,473,931,669.66/45,371.70
  6. Step 6: Final answer
    x = 32,485.71

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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.