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Finding the Fourth Proportional to 253,112.50, 379,690.62 and 66,124

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Solution

The fourth proportional to 253,112.50, 379,690.62 and 66,124 is: 99,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,112.50 : 379,690.62 = 66,124 : x
  2. Step 2: Convert to fraction form
    253,112.50/379,690.62 = 66,124/x
  3. Step 3: Cross multiply
    253,112.50x = 379,690.62 × 66,124
  4. Step 4: Simplify right side
    253,112.50x = 25,106,662,556.88
  5. Step 5: Solve for x
    x = 25,106,662,556.88/253,112.50
  6. Step 6: Final answer
    x = 99,191.71

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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.