Home / 54,767.20-82,215.60-54,378.40

Finding the Fourth Proportional to 54,767.20, 82,215.60 and 54,378.40

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Solution

The fourth proportional to 54,767.20, 82,215.60 and 54,378.40 is: 81,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,767.20 : 82,215.60 = 54,378.40 : x
  2. Step 2: Convert to fraction form
    54,767.20/82,215.60 = 54,378.40/x
  3. Step 3: Cross multiply
    54,767.20x = 82,215.60 × 54,378.40
  4. Step 4: Simplify right side
    54,767.20x = 4,470,752,783.04
  5. Step 5: Solve for x
    x = 4,470,752,783.04/54,767.20
  6. Step 6: Final answer
    x = 81,631.94

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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.