Home / 47,518.06-71,208.78-20,831.80

Finding the Fourth Proportional to 47,518.06, 71,208.78 and 20,831.80

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Solution

The fourth proportional to 47,518.06, 71,208.78 and 20,831.80 is: 31,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,518.06 : 71,208.78 = 20,831.80 : x
  2. Step 2: Convert to fraction form
    47,518.06/71,208.78 = 20,831.80/x
  3. Step 3: Cross multiply
    47,518.06x = 71,208.78 × 20,831.80
  4. Step 4: Simplify right side
    47,518.06x = 1,483,407,063.20
  5. Step 5: Solve for x
    x = 1,483,407,063.20/47,518.06
  6. Step 6: Final answer
    x = 31,217.75

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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.