Home / 30,290.75-45,432.51-8,105.84

Finding the Fourth Proportional to 30,290.75, 45,432.51 and 8,105.84

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Solution

The fourth proportional to 30,290.75, 45,432.51 and 8,105.84 is: 12,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.75 : 45,432.51 = 8,105.84 : x
  2. Step 2: Convert to fraction form
    30,290.75/45,432.51 = 8,105.84/x
  3. Step 3: Cross multiply
    30,290.75x = 45,432.51 × 8,105.84
  4. Step 4: Simplify right side
    30,290.75x = 368,268,429.70
  5. Step 5: Solve for x
    x = 368,268,429.70/30,290.75
  6. Step 6: Final answer
    x = 12,157.79

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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.