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Finding the Fourth Proportional to 72,600, 100,205.28 and 44,329.56

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Solution

The fourth proportional to 72,600, 100,205.28 and 44,329.56 is: 61,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,600 : 100,205.28 = 44,329.56 : x
  2. Step 2: Convert to fraction form
    72,600/100,205.28 = 44,329.56/x
  3. Step 3: Cross multiply
    72,600x = 100,205.28 × 44,329.56
  4. Step 4: Simplify right side
    72,600x = 4,442,055,972.08
  5. Step 5: Solve for x
    x = 4,442,055,972.08/72,600
  6. Step 6: Final answer
    x = 61,185.34

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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.