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Finding the Fourth Proportional to 66,745.80, 100,118.70 and 41,862.60

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Solution

The fourth proportional to 66,745.80, 100,118.70 and 41,862.60 is: 62,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,745.80 : 100,118.70 = 41,862.60 : x
  2. Step 2: Convert to fraction form
    66,745.80/100,118.70 = 41,862.60/x
  3. Step 3: Cross multiply
    66,745.80x = 100,118.70 × 41,862.60
  4. Step 4: Simplify right side
    66,745.80x = 4,191,229,090.62
  5. Step 5: Solve for x
    x = 4,191,229,090.62/66,745.80
  6. Step 6: Final answer
    x = 62,793.90

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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.