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Finding the Fourth Proportional to 115,725.87, 173,654.37 and 45,654.39

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Solution

The fourth proportional to 115,725.87, 173,654.37 and 45,654.39 is: 68,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,725.87 : 173,654.37 = 45,654.39 : x
  2. Step 2: Convert to fraction form
    115,725.87/173,654.37 = 45,654.39/x
  3. Step 3: Cross multiply
    115,725.87x = 173,654.37 × 45,654.39
  4. Step 4: Simplify right side
    115,725.87x = 7,928,084,333.18
  5. Step 5: Solve for x
    x = 7,928,084,333.18/115,725.87
  6. Step 6: Final answer
    x = 68,507.45

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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.