Home / 45,105.42-67,659.75-13,515.84

Finding the Fourth Proportional to 45,105.42, 67,659.75 and 13,515.84

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Solution

The fourth proportional to 45,105.42, 67,659.75 and 13,515.84 is: 20,274.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,105.42 : 67,659.75 = 13,515.84 : x
  2. Step 2: Convert to fraction form
    45,105.42/67,659.75 = 13,515.84/x
  3. Step 3: Cross multiply
    45,105.42x = 67,659.75 × 13,515.84
  4. Step 4: Simplify right side
    45,105.42x = 914,478,355.44
  5. Step 5: Solve for x
    x = 914,478,355.44/45,105.42
  6. Step 6: Final answer
    x = 20,274.25

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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.