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Finding the Fourth Proportional to 39,662.69, 54,734.01 and 21,757.91

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Solution

The fourth proportional to 39,662.69, 54,734.01 and 21,757.91 is: 30,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,662.69 : 54,734.01 = 21,757.91 : x
  2. Step 2: Convert to fraction form
    39,662.69/54,734.01 = 21,757.91/x
  3. Step 3: Cross multiply
    39,662.69x = 54,734.01 × 21,757.91
  4. Step 4: Simplify right side
    39,662.69x = 1,190,897,663.52
  5. Step 5: Solve for x
    x = 1,190,897,663.52/39,662.69
  6. Step 6: Final answer
    x = 30,025.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.