Home / 81,684,558.20-122,377,538.10-66,456,039.80

Finding the Fourth Proportional to 81,684,558.20, 122,377,538.10 and 66,456,039.80

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Solution

The fourth proportional to 81,684,558.20, 122,377,538.10 and 66,456,039.80 is: 99,562,594.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,684,558.20 : 122,377,538.10 = 66,456,039.80 : x
  2. Step 2: Convert to fraction form
    81,684,558.20/122,377,538.10 = 66,456,039.80/x
  3. Step 3: Cross multiply
    81,684,558.20x = 122,377,538.10 × 66,456,039.80
  4. Step 4: Simplify right side
    81,684,558.20x = 8,132,726,542,599,616
  5. Step 5: Solve for x
    x = 8,132,726,542,599,616/81,684,558.20
  6. Step 6: Final answer
    x = 99,562,594.47

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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.