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Finding the Fourth Proportional to 82,269.94, 123,404.90 and 19,940.44

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Solution

The fourth proportional to 82,269.94, 123,404.90 and 19,940.44 is: 29,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,269.94 : 123,404.90 = 19,940.44 : x
  2. Step 2: Convert to fraction form
    82,269.94/123,404.90 = 19,940.44/x
  3. Step 3: Cross multiply
    82,269.94x = 123,404.90 × 19,940.44
  4. Step 4: Simplify right side
    82,269.94x = 2,460,748,004.16
  5. Step 5: Solve for x
    x = 2,460,748,004.16/82,269.94
  6. Step 6: Final answer
    x = 29,910.66

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1.5x scale

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.