Home / 71,731.72-107,467.80-40,103.92

Finding the Fourth Proportional to 71,731.72, 107,467.80 and 40,103.92

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Solution

The fourth proportional to 71,731.72, 107,467.80 and 40,103.92 is: 60,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,731.72 : 107,467.80 = 40,103.92 : x
  2. Step 2: Convert to fraction form
    71,731.72/107,467.80 = 40,103.92/x
  3. Step 3: Cross multiply
    71,731.72x = 107,467.80 × 40,103.92
  4. Step 4: Simplify right side
    71,731.72x = 4,309,880,053.78
  5. Step 5: Solve for x
    x = 4,309,880,053.78/71,731.72
  6. Step 6: Final answer
    x = 60,083.32

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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.