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Finding the Fourth Proportional to 40,660.94, 60,991.41 and 11,078.93

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Solution

The fourth proportional to 40,660.94, 60,991.41 and 11,078.93 is: 16,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,660.94 : 60,991.41 = 11,078.93 : x
  2. Step 2: Convert to fraction form
    40,660.94/60,991.41 = 11,078.93/x
  3. Step 3: Cross multiply
    40,660.94x = 60,991.41 × 11,078.93
  4. Step 4: Simplify right side
    40,660.94x = 675,719,756.02
  5. Step 5: Solve for x
    x = 675,719,756.02/40,660.94
  6. Step 6: Final answer
    x = 16,618.40

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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.