Home / 81,209.44-121,788.24-25,792.48

Finding the Fourth Proportional to 81,209.44, 121,788.24 and 25,792.48

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Solution

The fourth proportional to 81,209.44, 121,788.24 and 25,792.48 is: 38,680.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,209.44 : 121,788.24 = 25,792.48 : x
  2. Step 2: Convert to fraction form
    81,209.44/121,788.24 = 25,792.48/x
  3. Step 3: Cross multiply
    81,209.44x = 121,788.24 × 25,792.48
  4. Step 4: Simplify right side
    81,209.44x = 3,141,220,744.44
  5. Step 5: Solve for x
    x = 3,141,220,744.44/81,209.44
  6. Step 6: Final answer
    x = 38,680.49

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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.