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Finding the Fourth Proportional to 66,611.12, 99,707.68 and 36,933.52

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Solution

The fourth proportional to 66,611.12, 99,707.68 and 36,933.52 is: 55,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,611.12 : 99,707.68 = 36,933.52 : x
  2. Step 2: Convert to fraction form
    66,611.12/99,707.68 = 36,933.52/x
  3. Step 3: Cross multiply
    66,611.12x = 99,707.68 × 36,933.52
  4. Step 4: Simplify right side
    66,611.12x = 3,682,555,593.43
  5. Step 5: Solve for x
    x = 3,682,555,593.43/66,611.12
  6. Step 6: Final answer
    x = 55,284.40

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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.