Home / 86,986.77-120,039.78-50,685.96

Finding the Fourth Proportional to 86,986.77, 120,039.78 and 50,685.96

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Solution

The fourth proportional to 86,986.77, 120,039.78 and 50,685.96 is: 69,945.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,986.77 : 120,039.78 = 50,685.96 : x
  2. Step 2: Convert to fraction form
    86,986.77/120,039.78 = 50,685.96/x
  3. Step 3: Cross multiply
    86,986.77x = 120,039.78 × 50,685.96
  4. Step 4: Simplify right side
    86,986.77x = 6,084,331,842.60
  5. Step 5: Solve for x
    x = 6,084,331,842.60/86,986.77
  6. Step 6: Final answer
    x = 69,945.49

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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.