Home / 72,732,198.44-100,372,561.78-39,694,566.60

Finding the Fourth Proportional to 72,732,198.44, 100,372,561.78 and 39,694,566.60

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Solution

The fourth proportional to 72,732,198.44, 100,372,561.78 and 39,694,566.60 is: 54,779,663.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,732,198.44 : 100,372,561.78 = 39,694,566.60 : x
  2. Step 2: Convert to fraction form
    72,732,198.44/100,372,561.78 = 39,694,566.60/x
  3. Step 3: Cross multiply
    72,732,198.44x = 100,372,561.78 × 39,694,566.60
  4. Step 4: Simplify right side
    72,732,198.44x = 3,984,245,338,388,824.50
  5. Step 5: Solve for x
    x = 3,984,245,338,388,824.50/72,732,198.44
  6. Step 6: Final answer
    x = 54,779,663.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.