Home / 7,171,163.72-9,896,208-3,907,979.36

Finding the Fourth Proportional to 7,171,163.72, 9,896,208 and 3,907,979.36

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Solution

The fourth proportional to 7,171,163.72, 9,896,208 and 3,907,979.36 is: 5,393,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171,163.72 : 9,896,208 = 3,907,979.36 : x
  2. Step 2: Convert to fraction form
    7,171,163.72/9,896,208 = 3,907,979.36/x
  3. Step 3: Cross multiply
    7,171,163.72x = 9,896,208 × 3,907,979.36
  4. Step 4: Simplify right side
    7,171,163.72x = 38,674,176,606,266.88
  5. Step 5: Solve for x
    x = 38,674,176,606,266.88/7,171,163.72
  6. Step 6: Final answer
    x = 5,393,012.64

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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.