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Finding the Fourth Proportional to 71,959,357.12, 107,954,795.04 and 20,843,458.24

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Solution

The fourth proportional to 71,959,357.12, 107,954,795.04 and 20,843,458.24 is: 31,269,752.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959,357.12 : 107,954,795.04 = 20,843,458.24 : x
  2. Step 2: Convert to fraction form
    71,959,357.12/107,954,795.04 = 20,843,458.24/x
  3. Step 3: Cross multiply
    71,959,357.12x = 107,954,795.04 × 20,843,458.24
  4. Step 4: Simplify right side
    71,959,357.12x = 2,250,151,262,223,999
  5. Step 5: Solve for x
    x = 2,250,151,262,223,999/71,959,357.12
  6. Step 6: Final answer
    x = 31,269,752.15

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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.