Home / 54,113.20-81,169.80-30,785.20

Finding the Fourth Proportional to 54,113.20, 81,169.80 and 30,785.20

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Solution

The fourth proportional to 54,113.20, 81,169.80 and 30,785.20 is: 46,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,113.20 : 81,169.80 = 30,785.20 : x
  2. Step 2: Convert to fraction form
    54,113.20/81,169.80 = 30,785.20/x
  3. Step 3: Cross multiply
    54,113.20x = 81,169.80 × 30,785.20
  4. Step 4: Simplify right side
    54,113.20x = 2,498,828,526.96
  5. Step 5: Solve for x
    x = 2,498,828,526.96/54,113.20
  6. Step 6: Final answer
    x = 46,177.80

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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.