Home / 83,986.28-115,856.94-49,970.60

Finding the Fourth Proportional to 83,986.28, 115,856.94 and 49,970.60

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Solution

The fourth proportional to 83,986.28, 115,856.94 and 49,970.60 is: 68,933.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,986.28 : 115,856.94 = 49,970.60 : x
  2. Step 2: Convert to fraction form
    83,986.28/115,856.94 = 49,970.60/x
  3. Step 3: Cross multiply
    83,986.28x = 115,856.94 × 49,970.60
  4. Step 4: Simplify right side
    83,986.28x = 5,789,440,805.96
  5. Step 5: Solve for x
    x = 5,789,440,805.96/83,986.28
  6. Step 6: Final answer
    x = 68,933.17

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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.