Home / 81,033.75-121,551.17-25,629.75

Finding the Fourth Proportional to 81,033.75, 121,551.17 and 25,629.75

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Solution

The fourth proportional to 81,033.75, 121,551.17 and 25,629.75 is: 38,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,033.75 : 121,551.17 = 25,629.75 : x
  2. Step 2: Convert to fraction form
    81,033.75/121,551.17 = 25,629.75/x
  3. Step 3: Cross multiply
    81,033.75x = 121,551.17 × 25,629.75
  4. Step 4: Simplify right side
    81,033.75x = 3,115,325,971.16
  5. Step 5: Solve for x
    x = 3,115,325,971.16/81,033.75
  6. Step 6: Final answer
    x = 38,444.80

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1.5x scale

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.