Home / 54,305,920.80-81,458,881.20-20,220,213.60

Finding the Fourth Proportional to 54,305,920.80, 81,458,881.20 and 20,220,213.60

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Solution

The fourth proportional to 54,305,920.80, 81,458,881.20 and 20,220,213.60 is: 30,330,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,305,920.80 : 81,458,881.20 = 20,220,213.60 : x
  2. Step 2: Convert to fraction form
    54,305,920.80/81,458,881.20 = 20,220,213.60/x
  3. Step 3: Cross multiply
    54,305,920.80x = 81,458,881.20 × 20,220,213.60
  4. Step 4: Simplify right side
    54,305,920.80x = 1,647,115,977,481,024.50
  5. Step 5: Solve for x
    x = 1,647,115,977,481,024.50/54,305,920.80
  6. Step 6: Final answer
    x = 30,330,320.40

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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.