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Finding the Fourth Proportional to 72,668.75, 108,844.88 and 35,149.68

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Solution

The fourth proportional to 72,668.75, 108,844.88 and 35,149.68 is: 52,647.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,668.75 : 108,844.88 = 35,149.68 : x
  2. Step 2: Convert to fraction form
    72,668.75/108,844.88 = 35,149.68/x
  3. Step 3: Cross multiply
    72,668.75x = 108,844.88 × 35,149.68
  4. Step 4: Simplify right side
    72,668.75x = 3,825,862,525.89
  5. Step 5: Solve for x
    x = 3,825,862,525.89/72,668.75
  6. Step 6: Final answer
    x = 52,647.98

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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.