Home / 86,120.40-118,838.26-49,812.54

Finding the Fourth Proportional to 86,120.40, 118,838.26 and 49,812.54

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Solution

The fourth proportional to 86,120.40, 118,838.26 and 49,812.54 is: 68,736.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.40 : 118,838.26 = 49,812.54 : x
  2. Step 2: Convert to fraction form
    86,120.40/118,838.26 = 49,812.54/x
  3. Step 3: Cross multiply
    86,120.40x = 118,838.26 × 49,812.54
  4. Step 4: Simplify right side
    86,120.40x = 5,919,635,579.78
  5. Step 5: Solve for x
    x = 5,919,635,579.78/86,120.40
  6. Step 6: Final answer
    x = 68,736.74

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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.