Home / 81,268.04-121,907.46-31,348.64

Finding the Fourth Proportional to 81,268.04, 121,907.46 and 31,348.64

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Solution

The fourth proportional to 81,268.04, 121,907.46 and 31,348.64 is: 47,025.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,268.04 : 121,907.46 = 31,348.64 : x
  2. Step 2: Convert to fraction form
    81,268.04/121,907.46 = 31,348.64/x
  3. Step 3: Cross multiply
    81,268.04x = 121,907.46 × 31,348.64
  4. Step 4: Simplify right side
    81,268.04x = 3,821,633,076.85
  5. Step 5: Solve for x
    x = 3,821,633,076.85/81,268.04
  6. Step 6: Final answer
    x = 47,025.04

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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.