Home / 81,108,505.26-111,892,217.67-71,825,535.90

Finding the Fourth Proportional to 81,108,505.26, 111,892,217.67 and 71,825,535.90

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Solution

The fourth proportional to 81,108,505.26, 111,892,217.67 and 71,825,535.90 is: 99,086,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108,505.26 : 111,892,217.67 = 71,825,535.90 : x
  2. Step 2: Convert to fraction form
    81,108,505.26/111,892,217.67 = 71,825,535.90/x
  3. Step 3: Cross multiply
    81,108,505.26x = 111,892,217.67 × 71,825,535.90
  4. Step 4: Simplify right side
    81,108,505.26x = 8,036,718,497,187,200
  5. Step 5: Solve for x
    x = 8,036,718,497,187,200/81,108,505.26
  6. Step 6: Final answer
    x = 99,086,014.12

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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.