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Finding the Fourth Proportional to 39,651.72, 54,736.76 and 27,761.68

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Solution

The fourth proportional to 39,651.72, 54,736.76 and 27,761.68 is: 38,323.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,651.72 : 54,736.76 = 27,761.68 : x
  2. Step 2: Convert to fraction form
    39,651.72/54,736.76 = 27,761.68/x
  3. Step 3: Cross multiply
    39,651.72x = 54,736.76 × 27,761.68
  4. Step 4: Simplify right side
    39,651.72x = 1,519,584,415.36
  5. Step 5: Solve for x
    x = 1,519,584,415.36/39,651.72
  6. Step 6: Final answer
    x = 38,323.29

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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.