Home / 81,440.66-122,085.36-31,553.37

Finding the Fourth Proportional to 81,440.66, 122,085.36 and 31,553.37

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Solution

The fourth proportional to 81,440.66, 122,085.36 and 31,553.37 is: 47,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.66 : 122,085.36 = 31,553.37 : x
  2. Step 2: Convert to fraction form
    81,440.66/122,085.36 = 31,553.37/x
  3. Step 3: Cross multiply
    81,440.66x = 122,085.36 × 31,553.37
  4. Step 4: Simplify right side
    81,440.66x = 3,852,204,535.66
  5. Step 5: Solve for x
    x = 3,852,204,535.66/81,440.66
  6. Step 6: Final answer
    x = 47,300.75

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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.