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Finding the Fourth Proportional to 72,761.19, 109,021.05 and 25,351.26

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Solution

The fourth proportional to 72,761.19, 109,021.05 and 25,351.26 is: 37,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,761.19 : 109,021.05 = 25,351.26 : x
  2. Step 2: Convert to fraction form
    72,761.19/109,021.05 = 25,351.26/x
  3. Step 3: Cross multiply
    72,761.19x = 109,021.05 × 25,351.26
  4. Step 4: Simplify right side
    72,761.19x = 2,763,820,984.02
  5. Step 5: Solve for x
    x = 2,763,820,984.02/72,761.19
  6. Step 6: Final answer
    x = 37,984.82

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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.