Home / 81,268.24-121,907.83-31,348.75

Finding the Fourth Proportional to 81,268.24, 121,907.83 and 31,348.75

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Solution

The fourth proportional to 81,268.24, 121,907.83 and 31,348.75 is: 47,025.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,268.24 : 121,907.83 = 31,348.75 : x
  2. Step 2: Convert to fraction form
    81,268.24/121,907.83 = 31,348.75/x
  3. Step 3: Cross multiply
    81,268.24x = 121,907.83 × 31,348.75
  4. Step 4: Simplify right side
    81,268.24x = 3,821,658,085.71
  5. Step 5: Solve for x
    x = 3,821,658,085.71/81,268.24
  6. Step 6: Final answer
    x = 47,025.24

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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.