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Finding the Fourth Proportional to 75,112.94, 103,654.33 and 43,279.94

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Solution

The fourth proportional to 75,112.94, 103,654.33 and 43,279.94 is: 59,725.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,112.94 : 103,654.33 = 43,279.94 : x
  2. Step 2: Convert to fraction form
    75,112.94/103,654.33 = 43,279.94/x
  3. Step 3: Cross multiply
    75,112.94x = 103,654.33 × 43,279.94
  4. Step 4: Simplify right side
    75,112.94x = 4,486,152,556.67
  5. Step 5: Solve for x
    x = 4,486,152,556.67/75,112.94
  6. Step 6: Final answer
    x = 59,725.43

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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.