Home / 81,153.71-121,625.09-33,066.19

Finding the Fourth Proportional to 81,153.71, 121,625.09 and 33,066.19

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Solution

The fourth proportional to 81,153.71, 121,625.09 and 33,066.19 is: 49,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,153.71 : 121,625.09 = 33,066.19 : x
  2. Step 2: Convert to fraction form
    81,153.71/121,625.09 = 33,066.19/x
  3. Step 3: Cross multiply
    81,153.71x = 121,625.09 × 33,066.19
  4. Step 4: Simplify right side
    81,153.71x = 4,021,677,561.25
  5. Step 5: Solve for x
    x = 4,021,677,561.25/81,153.71
  6. Step 6: Final answer
    x = 49,556.30

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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.