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Finding the Fourth Proportional to 39,945.99, 59,930.96 and 11,866.98

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Solution

The fourth proportional to 39,945.99, 59,930.96 and 11,866.98 is: 17,804.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,945.99 : 59,930.96 = 11,866.98 : x
  2. Step 2: Convert to fraction form
    39,945.99/59,930.96 = 11,866.98/x
  3. Step 3: Cross multiply
    39,945.99x = 59,930.96 × 11,866.98
  4. Step 4: Simplify right side
    39,945.99x = 711,199,444.37
  5. Step 5: Solve for x
    x = 711,199,444.37/39,945.99
  6. Step 6: Final answer
    x = 17,804.03

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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.