Home / 81,973,012.41-122,883,850.85-40,996,794.78

Finding the Fourth Proportional to 81,973,012.41, 122,883,850.85 and 40,996,794.78

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Solution

The fourth proportional to 81,973,012.41, 122,883,850.85 and 40,996,794.78 is: 61,457,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,973,012.41 : 122,883,850.85 = 40,996,794.78 : x
  2. Step 2: Convert to fraction form
    81,973,012.41/122,883,850.85 = 40,996,794.78/x
  3. Step 3: Cross multiply
    81,973,012.41x = 122,883,850.85 × 40,996,794.78
  4. Step 4: Simplify right side
    81,973,012.41x = 5,037,844,015,073,578
  5. Step 5: Solve for x
    x = 5,037,844,015,073,578/81,973,012.41
  6. Step 6: Final answer
    x = 61,457,348.79

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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.