Home / 86,845.98-119,809.35-66,667.26

Finding the Fourth Proportional to 86,845.98, 119,809.35 and 66,667.26

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Solution

The fourth proportional to 86,845.98, 119,809.35 and 66,667.26 is: 91,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,845.98 : 119,809.35 = 66,667.26 : x
  2. Step 2: Convert to fraction form
    86,845.98/119,809.35 = 66,667.26/x
  3. Step 3: Cross multiply
    86,845.98x = 119,809.35 × 66,667.26
  4. Step 4: Simplify right side
    86,845.98x = 7,987,361,086.88
  5. Step 5: Solve for x
    x = 7,987,361,086.88/86,845.98
  6. Step 6: Final answer
    x = 91,971.57

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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.