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Finding the Fourth Proportional to 72,736.26, 100,259.01 and 54,309.57

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Solution

The fourth proportional to 72,736.26, 100,259.01 and 54,309.57 is: 74,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.26 : 100,259.01 = 54,309.57 : x
  2. Step 2: Convert to fraction form
    72,736.26/100,259.01 = 54,309.57/x
  3. Step 3: Cross multiply
    72,736.26x = 100,259.01 × 54,309.57
  4. Step 4: Simplify right side
    72,736.26x = 5,445,023,721.73
  5. Step 5: Solve for x
    x = 5,445,023,721.73/72,736.26
  6. Step 6: Final answer
    x = 74,859.83

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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.