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Finding the Fourth Proportional to 72,544.85, 108,751.62 and 25,786.79

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Solution

The fourth proportional to 72,544.85, 108,751.62 and 25,786.79 is: 38,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,544.85 : 108,751.62 = 25,786.79 : x
  2. Step 2: Convert to fraction form
    72,544.85/108,751.62 = 25,786.79/x
  3. Step 3: Cross multiply
    72,544.85x = 108,751.62 × 25,786.79
  4. Step 4: Simplify right side
    72,544.85x = 2,804,355,187.10
  5. Step 5: Solve for x
    x = 2,804,355,187.10/72,544.85
  6. Step 6: Final answer
    x = 38,656.85

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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.