Home / 79,986.31-120,053.27-40,571.11

Finding the Fourth Proportional to 79,986.31, 120,053.27 and 40,571.11

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Solution

The fourth proportional to 79,986.31, 120,053.27 and 40,571.11 is: 60,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,986.31 : 120,053.27 = 40,571.11 : x
  2. Step 2: Convert to fraction form
    79,986.31/120,053.27 = 40,571.11/x
  3. Step 3: Cross multiply
    79,986.31x = 120,053.27 × 40,571.11
  4. Step 4: Simplify right side
    79,986.31x = 4,870,694,423.03
  5. Step 5: Solve for x
    x = 4,870,694,423.03/79,986.31
  6. Step 6: Final answer
    x = 60,894.10

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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.