Home / 30,287.45-45,431.16-8,100.25

Finding the Fourth Proportional to 30,287.45, 45,431.16 and 8,100.25

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Solution

The fourth proportional to 30,287.45, 45,431.16 and 8,100.25 is: 12,150.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.45 : 45,431.16 = 8,100.25 : x
  2. Step 2: Convert to fraction form
    30,287.45/45,431.16 = 8,100.25/x
  3. Step 3: Cross multiply
    30,287.45x = 45,431.16 × 8,100.25
  4. Step 4: Simplify right side
    30,287.45x = 368,003,539.84
  5. Step 5: Solve for x
    x = 368,003,539.84/30,287.45
  6. Step 6: Final answer
    x = 12,150.37

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Similar ratio
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1.5x scale

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.