Home / 66,241.40-91,436.60-39,383.78

Finding the Fourth Proportional to 66,241.40, 91,436.60 and 39,383.78

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Solution

The fourth proportional to 66,241.40, 91,436.60 and 39,383.78 is: 54,363.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,241.40 : 91,436.60 = 39,383.78 : x
  2. Step 2: Convert to fraction form
    66,241.40/91,436.60 = 39,383.78/x
  3. Step 3: Cross multiply
    66,241.40x = 91,436.60 × 39,383.78
  4. Step 4: Simplify right side
    66,241.40x = 3,601,118,938.35
  5. Step 5: Solve for x
    x = 3,601,118,938.35/66,241.40
  6. Step 6: Final answer
    x = 54,363.57

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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.