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Finding the Fourth Proportional to 71,513.08, 107,227.90 and 21,578.20

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Solution

The fourth proportional to 71,513.08, 107,227.90 and 21,578.20 is: 32,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,513.08 : 107,227.90 = 21,578.20 : x
  2. Step 2: Convert to fraction form
    71,513.08/107,227.90 = 21,578.20/x
  3. Step 3: Cross multiply
    71,513.08x = 107,227.90 × 21,578.20
  4. Step 4: Simplify right side
    71,513.08x = 2,313,784,830.68
  5. Step 5: Solve for x
    x = 2,313,784,830.68/71,513.08
  6. Step 6: Final answer
    x = 32,354.71

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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.