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Finding the Fourth Proportional to 40,889.61, 61,335.63 and 11,309.63

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Solution

The fourth proportional to 40,889.61, 61,335.63 and 11,309.63 is: 16,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.61 : 61,335.63 = 11,309.63 : x
  2. Step 2: Convert to fraction form
    40,889.61/61,335.63 = 11,309.63/x
  3. Step 3: Cross multiply
    40,889.61x = 61,335.63 × 11,309.63
  4. Step 4: Simplify right side
    40,889.61x = 693,682,974.44
  5. Step 5: Solve for x
    x = 693,682,974.44/40,889.61
  6. Step 6: Final answer
    x = 16,964.77

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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.