Home / 80,643,661.20-120,965,491.80-46,631,437.20

Finding the Fourth Proportional to 80,643,661.20, 120,965,491.80 and 46,631,437.20

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Solution

The fourth proportional to 80,643,661.20, 120,965,491.80 and 46,631,437.20 is: 69,947,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,661.20 : 120,965,491.80 = 46,631,437.20 : x
  2. Step 2: Convert to fraction form
    80,643,661.20/120,965,491.80 = 46,631,437.20/x
  3. Step 3: Cross multiply
    80,643,661.20x = 120,965,491.80 × 46,631,437.20
  4. Step 4: Simplify right side
    80,643,661.20x = 5,640,794,734,238,815
  5. Step 5: Solve for x
    x = 5,640,794,734,238,815/80,643,661.20
  6. Step 6: Final answer
    x = 69,947,155.80

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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.