Home / 72,686,968.99-100,308,331.31-39,647,927.18

Finding the Fourth Proportional to 72,686,968.99, 100,308,331.31 and 39,647,927.18

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Solution

The fourth proportional to 72,686,968.99, 100,308,331.31 and 39,647,927.18 is: 54,714,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,968.99 : 100,308,331.31 = 39,647,927.18 : x
  2. Step 2: Convert to fraction form
    72,686,968.99/100,308,331.31 = 39,647,927.18/x
  3. Step 3: Cross multiply
    72,686,968.99x = 100,308,331.31 × 39,647,927.18
  4. Step 4: Simplify right side
    72,686,968.99x = 3,977,017,415,601,942.50
  5. Step 5: Solve for x
    x = 3,977,017,415,601,942.50/72,686,968.99
  6. Step 6: Final answer
    x = 54,714,310.85

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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.