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Finding the Fourth Proportional to 40,813, 61,216.62 and 20,029

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Solution

The fourth proportional to 40,813, 61,216.62 and 20,029 is: 30,042.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,813 : 61,216.62 = 20,029 : x
  2. Step 2: Convert to fraction form
    40,813/61,216.62 = 20,029/x
  3. Step 3: Cross multiply
    40,813x = 61,216.62 × 20,029
  4. Step 4: Simplify right side
    40,813x = 1,226,107,681.98
  5. Step 5: Solve for x
    x = 1,226,107,681.98/40,813
  6. Step 6: Final answer
    x = 30,042.09

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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.