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Finding the Fourth Proportional to 72,483,958.82, 100,027,877.99 and 39,888,910.82

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Solution

The fourth proportional to 72,483,958.82, 100,027,877.99 and 39,888,910.82 is: 55,046,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483,958.82 : 100,027,877.99 = 39,888,910.82 : x
  2. Step 2: Convert to fraction form
    72,483,958.82/100,027,877.99 = 39,888,910.82/x
  3. Step 3: Cross multiply
    72,483,958.82x = 100,027,877.99 × 39,888,910.82
  4. Step 4: Simplify right side
    72,483,958.82x = 3,990,003,104,707,576
  5. Step 5: Solve for x
    x = 3,990,003,104,707,576/72,483,958.82
  6. Step 6: Final answer
    x = 55,046,705.09

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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.