Home / 82,022,810.80-123,034,216.20-80,747,352.40

Finding the Fourth Proportional to 82,022,810.80, 123,034,216.20 and 80,747,352.40

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Solution

The fourth proportional to 82,022,810.80, 123,034,216.20 and 80,747,352.40 is: 121,121,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,022,810.80 : 123,034,216.20 = 80,747,352.40 : x
  2. Step 2: Convert to fraction form
    82,022,810.80/123,034,216.20 = 80,747,352.40/x
  3. Step 3: Cross multiply
    82,022,810.80x = 123,034,216.20 × 80,747,352.40
  4. Step 4: Simplify right side
    82,022,810.80x = 9,934,687,212,759,190
  5. Step 5: Solve for x
    x = 9,934,687,212,759,190/82,022,810.80
  6. Step 6: Final answer
    x = 121,121,028.60

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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.