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Finding the Fourth Proportional to 72,467.82, 100,004.04 and 40,636.02

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Solution

The fourth proportional to 72,467.82, 100,004.04 and 40,636.02 is: 56,076.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,467.82 : 100,004.04 = 40,636.02 : x
  2. Step 2: Convert to fraction form
    72,467.82/100,004.04 = 40,636.02/x
  3. Step 3: Cross multiply
    72,467.82x = 100,004.04 × 40,636.02
  4. Step 4: Simplify right side
    72,467.82x = 4,063,766,169.52
  5. Step 5: Solve for x
    x = 4,063,766,169.52/72,467.82
  6. Step 6: Final answer
    x = 56,076.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.