Home / 75,729.96-104,519.43-57,790.89

Finding the Fourth Proportional to 75,729.96, 104,519.43 and 57,790.89

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Solution

The fourth proportional to 75,729.96, 104,519.43 and 57,790.89 is: 79,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,729.96 : 104,519.43 = 57,790.89 : x
  2. Step 2: Convert to fraction form
    75,729.96/104,519.43 = 57,790.89/x
  3. Step 3: Cross multiply
    75,729.96x = 104,519.43 × 57,790.89
  4. Step 4: Simplify right side
    75,729.96x = 6,040,270,881.99
  5. Step 5: Solve for x
    x = 6,040,270,881.99/75,729.96
  6. Step 6: Final answer
    x = 79,760.65

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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.