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Finding the Fourth Proportional to 12,171,991.22, 16,797,349.05 and 6,739,483.22

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Solution

The fourth proportional to 12,171,991.22, 16,797,349.05 and 6,739,483.22 is: 9,300,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171,991.22 : 16,797,349.05 = 6,739,483.22 : x
  2. Step 2: Convert to fraction form
    12,171,991.22/16,797,349.05 = 6,739,483.22/x
  3. Step 3: Cross multiply
    12,171,991.22x = 16,797,349.05 × 6,739,483.22
  4. Step 4: Simplify right side
    12,171,991.22x = 113,205,452,062,957.94
  5. Step 5: Solve for x
    x = 113,205,452,062,957.94/12,171,991.22
  6. Step 6: Final answer
    x = 9,300,487.49

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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.