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Finding the Fourth Proportional to 66,846.70, 100,238.73 and 38,774.80

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Solution

The fourth proportional to 66,846.70, 100,238.73 and 38,774.80 is: 58,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,846.70 : 100,238.73 = 38,774.80 : x
  2. Step 2: Convert to fraction form
    66,846.70/100,238.73 = 38,774.80/x
  3. Step 3: Cross multiply
    66,846.70x = 100,238.73 × 38,774.80
  4. Step 4: Simplify right side
    66,846.70x = 3,886,736,708.00
  5. Step 5: Solve for x
    x = 3,886,736,708.00/66,846.70
  6. Step 6: Final answer
    x = 58,144.03

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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.