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Finding the Fourth Proportional to 86,858.33, 130,309.96 and 50,865.18

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Solution

The fourth proportional to 86,858.33, 130,309.96 and 50,865.18 is: 76,310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,858.33 : 130,309.96 = 50,865.18 : x
  2. Step 2: Convert to fraction form
    86,858.33/130,309.96 = 50,865.18/x
  3. Step 3: Cross multiply
    86,858.33x = 130,309.96 × 50,865.18
  4. Step 4: Simplify right side
    86,858.33x = 6,628,239,571.19
  5. Step 5: Solve for x
    x = 6,628,239,571.19/86,858.33
  6. Step 6: Final answer
    x = 76,310.93

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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.