Home / 82,378,629.20-123,567,943.80-20,967,669.20

Finding the Fourth Proportional to 82,378,629.20, 123,567,943.80 and 20,967,669.20

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Solution

The fourth proportional to 82,378,629.20, 123,567,943.80 and 20,967,669.20 is: 31,451,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,378,629.20 : 123,567,943.80 = 20,967,669.20 : x
  2. Step 2: Convert to fraction form
    82,378,629.20/123,567,943.80 = 20,967,669.20/x
  3. Step 3: Cross multiply
    82,378,629.20x = 123,567,943.80 × 20,967,669.20
  4. Step 4: Simplify right side
    82,378,629.20x = 2,590,931,769,322,591
  5. Step 5: Solve for x
    x = 2,590,931,769,322,591/82,378,629.20
  6. Step 6: Final answer
    x = 31,451,503.80

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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.