Home / 81,074.96-121,634.74-38,990.25

Finding the Fourth Proportional to 81,074.96, 121,634.74 and 38,990.25

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Solution

The fourth proportional to 81,074.96, 121,634.74 and 38,990.25 is: 58,496.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,074.96 : 121,634.74 = 38,990.25 : x
  2. Step 2: Convert to fraction form
    81,074.96/121,634.74 = 38,990.25/x
  3. Step 3: Cross multiply
    81,074.96x = 121,634.74 × 38,990.25
  4. Step 4: Simplify right side
    81,074.96x = 4,742,568,689.31
  5. Step 5: Solve for x
    x = 4,742,568,689.31/81,074.96
  6. Step 6: Final answer
    x = 58,496.09

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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.