Home / 81,391,927.20-122,087,890.80-30,263,366.40

Finding the Fourth Proportional to 81,391,927.20, 122,087,890.80 and 30,263,366.40

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Solution

The fourth proportional to 81,391,927.20, 122,087,890.80 and 30,263,366.40 is: 45,395,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,391,927.20 : 122,087,890.80 = 30,263,366.40 : x
  2. Step 2: Convert to fraction form
    81,391,927.20/122,087,890.80 = 30,263,366.40/x
  3. Step 3: Cross multiply
    81,391,927.20x = 122,087,890.80 × 30,263,366.40
  4. Step 4: Simplify right side
    81,391,927.20x = 3,694,790,572,283,589
  5. Step 5: Solve for x
    x = 3,694,790,572,283,589/81,391,927.20
  6. Step 6: Final answer
    x = 45,395,049.60

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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.