Home / 99,891.92-137,855.05-57,450.49

Finding the Fourth Proportional to 99,891.92, 137,855.05 and 57,450.49

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Solution

The fourth proportional to 99,891.92, 137,855.05 and 57,450.49 is: 79,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,891.92 : 137,855.05 = 57,450.49 : x
  2. Step 2: Convert to fraction form
    99,891.92/137,855.05 = 57,450.49/x
  3. Step 3: Cross multiply
    99,891.92x = 137,855.05 × 57,450.49
  4. Step 4: Simplify right side
    99,891.92x = 7,919,840,171.47
  5. Step 5: Solve for x
    x = 7,919,840,171.47/99,891.92
  6. Step 6: Final answer
    x = 79,284.09

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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.