Home / 81,868.26-122,802.39-29,274.56

Finding the Fourth Proportional to 81,868.26, 122,802.39 and 29,274.56

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Solution

The fourth proportional to 81,868.26, 122,802.39 and 29,274.56 is: 43,911.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,868.26 : 122,802.39 = 29,274.56 : x
  2. Step 2: Convert to fraction form
    81,868.26/122,802.39 = 29,274.56/x
  3. Step 3: Cross multiply
    81,868.26x = 122,802.39 × 29,274.56
  4. Step 4: Simplify right side
    81,868.26x = 3,594,985,320.19
  5. Step 5: Solve for x
    x = 3,594,985,320.19/81,868.26
  6. Step 6: Final answer
    x = 43,911.83

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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.