Home / 67,211.10-100,831.14-20,462.76

Finding the Fourth Proportional to 67,211.10, 100,831.14 and 20,462.76

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Solution

The fourth proportional to 67,211.10, 100,831.14 and 20,462.76 is: 30,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,211.10 : 100,831.14 = 20,462.76 : x
  2. Step 2: Convert to fraction form
    67,211.10/100,831.14 = 20,462.76/x
  3. Step 3: Cross multiply
    67,211.10x = 100,831.14 × 20,462.76
  4. Step 4: Simplify right side
    67,211.10x = 2,063,283,418.35
  5. Step 5: Solve for x
    x = 2,063,283,418.35/67,211.10
  6. Step 6: Final answer
    x = 30,698.55

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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.