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Finding the Fourth Proportional to 72,504.54, 108,740.97 and 19,908.54

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Solution

The fourth proportional to 72,504.54, 108,740.97 and 19,908.54 is: 29,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,504.54 : 108,740.97 = 19,908.54 : x
  2. Step 2: Convert to fraction form
    72,504.54/108,740.97 = 19,908.54/x
  3. Step 3: Cross multiply
    72,504.54x = 108,740.97 × 19,908.54
  4. Step 4: Simplify right side
    72,504.54x = 2,164,873,950.88
  5. Step 5: Solve for x
    x = 2,164,873,950.88/72,504.54
  6. Step 6: Final answer
    x = 29,858.46

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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.