Home / 30,290.25-45,431.76-8,105.34

Finding the Fourth Proportional to 30,290.25, 45,431.76 and 8,105.34

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Solution

The fourth proportional to 30,290.25, 45,431.76 and 8,105.34 is: 12,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.25 : 45,431.76 = 8,105.34 : x
  2. Step 2: Convert to fraction form
    30,290.25/45,431.76 = 8,105.34/x
  3. Step 3: Cross multiply
    30,290.25x = 45,431.76 × 8,105.34
  4. Step 4: Simplify right side
    30,290.25x = 368,239,634.44
  5. Step 5: Solve for x
    x = 368,239,634.44/30,290.25
  6. Step 6: Final answer
    x = 12,157.04

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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.