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Finding the Fourth Proportional to 72,040.88, 108,061.92 and 25,293.75

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Solution

The fourth proportional to 72,040.88, 108,061.92 and 25,293.75 is: 37,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.88 : 108,061.92 = 25,293.75 : x
  2. Step 2: Convert to fraction form
    72,040.88/108,061.92 = 25,293.75/x
  3. Step 3: Cross multiply
    72,040.88x = 108,061.92 × 25,293.75
  4. Step 4: Simplify right side
    72,040.88x = 2,733,291,189
  5. Step 5: Solve for x
    x = 2,733,291,189/72,040.88
  6. Step 6: Final answer
    x = 37,940.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.