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Finding the Fourth Proportional to 43,352.51, 65,027.79 and 19,978.97

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Solution

The fourth proportional to 43,352.51, 65,027.79 and 19,978.97 is: 29,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,352.51 : 65,027.79 = 19,978.97 : x
  2. Step 2: Convert to fraction form
    43,352.51/65,027.79 = 19,978.97/x
  3. Step 3: Cross multiply
    43,352.51x = 65,027.79 × 19,978.97
  4. Step 4: Simplify right side
    43,352.51x = 1,299,187,940.44
  5. Step 5: Solve for x
    x = 1,299,187,940.44/43,352.51
  6. Step 6: Final answer
    x = 29,968.00

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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.