Home / 66,404.09-91,634.96-36,188.78

Finding the Fourth Proportional to 66,404.09, 91,634.96 and 36,188.78

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Solution

The fourth proportional to 66,404.09, 91,634.96 and 36,188.78 is: 49,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.09 : 91,634.96 = 36,188.78 : x
  2. Step 2: Convert to fraction form
    66,404.09/91,634.96 = 36,188.78/x
  3. Step 3: Cross multiply
    66,404.09x = 91,634.96 × 36,188.78
  4. Step 4: Simplify right side
    66,404.09x = 3,316,156,768.63
  5. Step 5: Solve for x
    x = 3,316,156,768.63/66,404.09
  6. Step 6: Final answer
    x = 49,939.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.