Home / 81,241.07-121,826.75-27,938.41

Finding the Fourth Proportional to 81,241.07, 121,826.75 and 27,938.41

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Solution

The fourth proportional to 81,241.07, 121,826.75 and 27,938.41 is: 41,895.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,241.07 : 121,826.75 = 27,938.41 : x
  2. Step 2: Convert to fraction form
    81,241.07/121,826.75 = 27,938.41/x
  3. Step 3: Cross multiply
    81,241.07x = 121,826.75 × 27,938.41
  4. Step 4: Simplify right side
    81,241.07x = 3,403,645,246.21
  5. Step 5: Solve for x
    x = 3,403,645,246.21/81,241.07
  6. Step 6: Final answer
    x = 41,895.63

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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.