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Finding the Fourth Proportional to 40,661.79, 60,986.52 and 11,081.99

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Solution

The fourth proportional to 40,661.79, 60,986.52 and 11,081.99 is: 16,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,661.79 : 60,986.52 = 11,081.99 : x
  2. Step 2: Convert to fraction form
    40,661.79/60,986.52 = 11,081.99/x
  3. Step 3: Cross multiply
    40,661.79x = 60,986.52 × 11,081.99
  4. Step 4: Simplify right side
    40,661.79x = 675,851,699.84
  5. Step 5: Solve for x
    x = 675,851,699.84/40,661.79
  6. Step 6: Final answer
    x = 16,621.30

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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.