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Finding the Fourth Proportional to 40,326.71, 60,502.36 and 20,619.11

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Solution

The fourth proportional to 40,326.71, 60,502.36 and 20,619.11 is: 30,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,326.71 : 60,502.36 = 20,619.11 : x
  2. Step 2: Convert to fraction form
    40,326.71/60,502.36 = 20,619.11/x
  3. Step 3: Cross multiply
    40,326.71x = 60,502.36 × 20,619.11
  4. Step 4: Simplify right side
    40,326.71x = 1,247,504,816.10
  5. Step 5: Solve for x
    x = 1,247,504,816.10/40,326.71
  6. Step 6: Final answer
    x = 30,934.95

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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.