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Finding the Fourth Proportional to 86,107.89, 118,821.02 and 49,800.05

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Solution

The fourth proportional to 86,107.89, 118,821.02 and 49,800.05 is: 68,719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,107.89 : 118,821.02 = 49,800.05 : x
  2. Step 2: Convert to fraction form
    86,107.89/118,821.02 = 49,800.05/x
  3. Step 3: Cross multiply
    86,107.89x = 118,821.02 × 49,800.05
  4. Step 4: Simplify right side
    86,107.89x = 5,917,291,893.95
  5. Step 5: Solve for x
    x = 5,917,291,893.95/86,107.89
  6. Step 6: Final answer
    x = 68,719.51

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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.