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Finding the Fourth Proportional to 86,164.26, 118,917.36 and 48,438.51

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Solution

The fourth proportional to 86,164.26, 118,917.36 and 48,438.51 is: 66,851.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,164.26 : 118,917.36 = 48,438.51 : x
  2. Step 2: Convert to fraction form
    86,164.26/118,917.36 = 48,438.51/x
  3. Step 3: Cross multiply
    86,164.26x = 118,917.36 × 48,438.51
  4. Step 4: Simplify right side
    86,164.26x = 5,760,179,731.53
  5. Step 5: Solve for x
    x = 5,760,179,731.53/86,164.26
  6. Step 6: Final answer
    x = 66,851.15

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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.