Home / 81,107,032.80-121,659,499.44-19,696,694.88

Finding the Fourth Proportional to 81,107,032.80, 121,659,499.44 and 19,696,694.88

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Solution

The fourth proportional to 81,107,032.80, 121,659,499.44 and 19,696,694.88 is: 29,544,787.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,107,032.80 : 121,659,499.44 = 19,696,694.88 : x
  2. Step 2: Convert to fraction form
    81,107,032.80/121,659,499.44 = 19,696,694.88/x
  3. Step 3: Cross multiply
    81,107,032.80x = 121,659,499.44 × 19,696,694.88
  4. Step 4: Simplify right side
    81,107,032.80x = 2,396,290,039,723,210.50
  5. Step 5: Solve for x
    x = 2,396,290,039,723,210.50/81,107,032.80
  6. Step 6: Final answer
    x = 29,544,787.39

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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.