Home / 80,864.91-121,334.99-30,928.54

Finding the Fourth Proportional to 80,864.91, 121,334.99 and 30,928.54

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Solution

The fourth proportional to 80,864.91, 121,334.99 and 30,928.54 is: 46,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.91 : 121,334.99 = 30,928.54 : x
  2. Step 2: Convert to fraction form
    80,864.91/121,334.99 = 30,928.54/x
  3. Step 3: Cross multiply
    80,864.91x = 121,334.99 × 30,928.54
  4. Step 4: Simplify right side
    80,864.91x = 3,752,714,091.61
  5. Step 5: Solve for x
    x = 3,752,714,091.61/80,864.91
  6. Step 6: Final answer
    x = 46,407.20

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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.