Home / 55,781.46-83,705.43-20,245.55

Finding the Fourth Proportional to 55,781.46, 83,705.43 and 20,245.55

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Solution

The fourth proportional to 55,781.46, 83,705.43 and 20,245.55 is: 30,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,781.46 : 83,705.43 = 20,245.55 : x
  2. Step 2: Convert to fraction form
    55,781.46/83,705.43 = 20,245.55/x
  3. Step 3: Cross multiply
    55,781.46x = 83,705.43 × 20,245.55
  4. Step 4: Simplify right side
    55,781.46x = 1,694,662,049.81
  5. Step 5: Solve for x
    x = 1,694,662,049.81/55,781.46
  6. Step 6: Final answer
    x = 30,380.38

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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.