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Finding the Fourth Proportional to 40,401, 60,611.34 and 12,699

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Solution

The fourth proportional to 40,401, 60,611.34 and 12,699 is: 19,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,401 : 60,611.34 = 12,699 : x
  2. Step 2: Convert to fraction form
    40,401/60,611.34 = 12,699/x
  3. Step 3: Cross multiply
    40,401x = 60,611.34 × 12,699
  4. Step 4: Simplify right side
    40,401x = 769,703,406.66
  5. Step 5: Solve for x
    x = 769,703,406.66/40,401
  6. Step 6: Final answer
    x = 19,051.59

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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.