Home / 85,021.30-127,391.81-49,382.57

Finding the Fourth Proportional to 85,021.30, 127,391.81 and 49,382.57

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Solution

The fourth proportional to 85,021.30, 127,391.81 and 49,382.57 is: 73,992.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,021.30 : 127,391.81 = 49,382.57 : x
  2. Step 2: Convert to fraction form
    85,021.30/127,391.81 = 49,382.57/x
  3. Step 3: Cross multiply
    85,021.30x = 127,391.81 × 49,382.57
  4. Step 4: Simplify right side
    85,021.30x = 6,290,935,104.69
  5. Step 5: Solve for x
    x = 6,290,935,104.69/85,021.30
  6. Step 6: Final answer
    x = 73,992.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.