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Finding the Fourth Proportional to 55,308.79, 82,963.17 and 13,755.79

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Solution

The fourth proportional to 55,308.79, 82,963.17 and 13,755.79 is: 20,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,308.79 : 82,963.17 = 13,755.79 : x
  2. Step 2: Convert to fraction form
    55,308.79/82,963.17 = 13,755.79/x
  3. Step 3: Cross multiply
    55,308.79x = 82,963.17 × 13,755.79
  4. Step 4: Simplify right side
    55,308.79x = 1,141,223,944.25
  5. Step 5: Solve for x
    x = 1,141,223,944.25/55,308.79
  6. Step 6: Final answer
    x = 20,633.68

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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.