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Finding the Fourth Proportional to 66,906.09, 100,376.01 and 47,223.09

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Solution

The fourth proportional to 66,906.09, 100,376.01 and 47,223.09 is: 70,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.09 : 100,376.01 = 47,223.09 : x
  2. Step 2: Convert to fraction form
    66,906.09/100,376.01 = 47,223.09/x
  3. Step 3: Cross multiply
    66,906.09x = 100,376.01 × 47,223.09
  4. Step 4: Simplify right side
    66,906.09x = 4,740,065,354.07
  5. Step 5: Solve for x
    x = 4,740,065,354.07/66,906.09
  6. Step 6: Final answer
    x = 70,846.55

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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.