Home / 105,684.20-145,849.79-57,939.56

Finding the Fourth Proportional to 105,684.20, 145,849.79 and 57,939.56

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Solution

The fourth proportional to 105,684.20, 145,849.79 and 57,939.56 is: 79,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,684.20 : 145,849.79 = 57,939.56 : x
  2. Step 2: Convert to fraction form
    105,684.20/145,849.79 = 57,939.56/x
  3. Step 3: Cross multiply
    105,684.20x = 145,849.79 × 57,939.56
  4. Step 4: Simplify right side
    105,684.20x = 8,450,472,658.69
  5. Step 5: Solve for x
    x = 8,450,472,658.69/105,684.20
  6. Step 6: Final answer
    x = 79,959.66

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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.