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Finding the Fourth Proportional to 66,444.20, 99,739.20 and 36,846.80

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Solution

The fourth proportional to 66,444.20, 99,739.20 and 36,846.80 is: 55,310.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,444.20 : 99,739.20 = 36,846.80 : x
  2. Step 2: Convert to fraction form
    66,444.20/99,739.20 = 36,846.80/x
  3. Step 3: Cross multiply
    66,444.20x = 99,739.20 × 36,846.80
  4. Step 4: Simplify right side
    66,444.20x = 3,675,070,354.56
  5. Step 5: Solve for x
    x = 3,675,070,354.56/66,444.20
  6. Step 6: Final answer
    x = 55,310.63

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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.