Home / 71,212.12-98,309.82-66,500.44

Finding the Fourth Proportional to 71,212.12, 98,309.82 and 66,500.44

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Solution

The fourth proportional to 71,212.12, 98,309.82 and 66,500.44 is: 91,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,212.12 : 98,309.82 = 66,500.44 : x
  2. Step 2: Convert to fraction form
    71,212.12/98,309.82 = 66,500.44/x
  3. Step 3: Cross multiply
    71,212.12x = 98,309.82 × 66,500.44
  4. Step 4: Simplify right side
    71,212.12x = 6,537,646,286.32
  5. Step 5: Solve for x
    x = 6,537,646,286.32/71,212.12
  6. Step 6: Final answer
    x = 91,805.25

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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.