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Finding the Fourth Proportional to 40,406.97, 60,619.64 and 12,329.54

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Solution

The fourth proportional to 40,406.97, 60,619.64 and 12,329.54 is: 18,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,406.97 : 60,619.64 = 12,329.54 : x
  2. Step 2: Convert to fraction form
    40,406.97/60,619.64 = 12,329.54/x
  3. Step 3: Cross multiply
    40,406.97x = 60,619.64 × 12,329.54
  4. Step 4: Simplify right side
    40,406.97x = 747,411,911.42
  5. Step 5: Solve for x
    x = 747,411,911.42/40,406.97
  6. Step 6: Final answer
    x = 18,497.10

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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.