Home / 78,196,821.66-107,912,357.73-43,392,750.57

Finding the Fourth Proportional to 78,196,821.66, 107,912,357.73 and 43,392,750.57

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Solution

The fourth proportional to 78,196,821.66, 107,912,357.73 and 43,392,750.57 is: 59,882,408.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,196,821.66 : 107,912,357.73 = 43,392,750.57 : x
  2. Step 2: Convert to fraction form
    78,196,821.66/107,912,357.73 = 43,392,750.57/x
  3. Step 3: Cross multiply
    78,196,821.66x = 107,912,357.73 × 43,392,750.57
  4. Step 4: Simplify right side
    78,196,821.66x = 4,682,614,022,398,502
  5. Step 5: Solve for x
    x = 4,682,614,022,398,502/78,196,821.66
  6. Step 6: Final answer
    x = 59,882,408.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.