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Finding the Fourth Proportional to 66,895.97, 100,360.67 and 47,212.97

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Solution

The fourth proportional to 66,895.97, 100,360.67 and 47,212.97 is: 70,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,895.97 : 100,360.67 = 47,212.97 : x
  2. Step 2: Convert to fraction form
    66,895.97/100,360.67 = 47,212.97/x
  3. Step 3: Cross multiply
    66,895.97x = 100,360.67 × 47,212.97
  4. Step 4: Simplify right side
    66,895.97x = 4,738,324,800.09
  5. Step 5: Solve for x
    x = 4,738,324,800.09/66,895.97
  6. Step 6: Final answer
    x = 70,831.25

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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.