Home / 82,986.82-114,507.93-78,783.46

Finding the Fourth Proportional to 82,986.82, 114,507.93 and 78,783.46

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Solution

The fourth proportional to 82,986.82, 114,507.93 and 78,783.46 is: 108,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,986.82 : 114,507.93 = 78,783.46 : x
  2. Step 2: Convert to fraction form
    82,986.82/114,507.93 = 78,783.46/x
  3. Step 3: Cross multiply
    82,986.82x = 114,507.93 × 78,783.46
  4. Step 4: Simplify right side
    82,986.82x = 9,021,330,922.84
  5. Step 5: Solve for x
    x = 9,021,330,922.84/82,986.82
  6. Step 6: Final answer
    x = 108,708.00

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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.