Home / 81,653.54-122,479.22-39,537.38

Finding the Fourth Proportional to 81,653.54, 122,479.22 and 39,537.38

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Solution

The fourth proportional to 81,653.54, 122,479.22 and 39,537.38 is: 59,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.54 : 122,479.22 = 39,537.38 : x
  2. Step 2: Convert to fraction form
    81,653.54/122,479.22 = 39,537.38/x
  3. Step 3: Cross multiply
    81,653.54x = 122,479.22 × 39,537.38
  4. Step 4: Simplify right side
    81,653.54x = 4,842,507,645.89
  5. Step 5: Solve for x
    x = 4,842,507,645.89/81,653.54
  6. Step 6: Final answer
    x = 59,305.55

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1.5x scale

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.