Home / 83,622,661.20-125,433,991.80-66,403,972.80

Finding the Fourth Proportional to 83,622,661.20, 125,433,991.80 and 66,403,972.80

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Solution

The fourth proportional to 83,622,661.20, 125,433,991.80 and 66,403,972.80 is: 99,605,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,622,661.20 : 125,433,991.80 = 66,403,972.80 : x
  2. Step 2: Convert to fraction form
    83,622,661.20/125,433,991.80 = 66,403,972.80/x
  3. Step 3: Cross multiply
    83,622,661.20x = 125,433,991.80 × 66,403,972.80
  4. Step 4: Simplify right side
    83,622,661.20x = 8,329,315,379,682,622
  5. Step 5: Solve for x
    x = 8,329,315,379,682,622/83,622,661.20
  6. Step 6: Final answer
    x = 99,605,959.20

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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.