Home / 45,211.50-67,831.56-20,272.95

Finding the Fourth Proportional to 45,211.50, 67,831.56 and 20,272.95

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Solution

The fourth proportional to 45,211.50, 67,831.56 and 20,272.95 is: 30,415.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,211.50 : 67,831.56 = 20,272.95 : x
  2. Step 2: Convert to fraction form
    45,211.50/67,831.56 = 20,272.95/x
  3. Step 3: Cross multiply
    45,211.50x = 67,831.56 × 20,272.95
  4. Step 4: Simplify right side
    45,211.50x = 1,375,145,824.30
  5. Step 5: Solve for x
    x = 1,375,145,824.30/45,211.50
  6. Step 6: Final answer
    x = 30,415.84

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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.