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Finding the Fourth Proportional to 86,120.84, 118,850.28 and 48,395

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Solution

The fourth proportional to 86,120.84, 118,850.28 and 48,395 is: 66,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.84 : 118,850.28 = 48,395 : x
  2. Step 2: Convert to fraction form
    86,120.84/118,850.28 = 48,395/x
  3. Step 3: Cross multiply
    86,120.84x = 118,850.28 × 48,395
  4. Step 4: Simplify right side
    86,120.84x = 5,751,759,300.60
  5. Step 5: Solve for x
    x = 5,751,759,300.60/86,120.84
  6. Step 6: Final answer
    x = 66,787.08

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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.