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Finding the Fourth Proportional to 72,266.22, 108,405.81 and 19,675.98

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Solution

The fourth proportional to 72,266.22, 108,405.81 and 19,675.98 is: 29,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,266.22 : 108,405.81 = 19,675.98 : x
  2. Step 2: Convert to fraction form
    72,266.22/108,405.81 = 19,675.98/x
  3. Step 3: Cross multiply
    72,266.22x = 108,405.81 × 19,675.98
  4. Step 4: Simplify right side
    72,266.22x = 2,132,990,549.44
  5. Step 5: Solve for x
    x = 2,132,990,549.44/72,266.22
  6. Step 6: Final answer
    x = 29,515.73

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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.