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Finding the Fourth Proportional to 107,843.31, 161,766 and 28,957.55

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Solution

The fourth proportional to 107,843.31, 161,766 and 28,957.55 is: 43,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,843.31 : 161,766 = 28,957.55 : x
  2. Step 2: Convert to fraction form
    107,843.31/161,766 = 28,957.55/x
  3. Step 3: Cross multiply
    107,843.31x = 161,766 × 28,957.55
  4. Step 4: Simplify right side
    107,843.31x = 4,684,346,224.47
  5. Step 5: Solve for x
    x = 4,684,346,224.47/107,843.31
  6. Step 6: Final answer
    x = 43,436.60

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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.