Home / 54,965,815.20-82,480,215.60-20,911,600.80

Finding the Fourth Proportional to 54,965,815.20, 82,480,215.60 and 20,911,600.80

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Solution

The fourth proportional to 54,965,815.20, 82,480,215.60 and 20,911,600.80 is: 31,379,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,965,815.20 : 82,480,215.60 = 20,911,600.80 : x
  2. Step 2: Convert to fraction form
    54,965,815.20/82,480,215.60 = 20,911,600.80/x
  3. Step 3: Cross multiply
    54,965,815.20x = 82,480,215.60 × 20,911,600.80
  4. Step 4: Simplify right side
    54,965,815.20x = 1,724,793,342,525,132.50
  5. Step 5: Solve for x
    x = 1,724,793,342,525,132.50/54,965,815.20
  6. Step 6: Final answer
    x = 31,379,382.55

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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.