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Finding the Fourth Proportional to 67,340, 92,918.24 and 40,476

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Solution

The fourth proportional to 67,340, 92,918.24 and 40,476 is: 55,850.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,340 : 92,918.24 = 40,476 : x
  2. Step 2: Convert to fraction form
    67,340/92,918.24 = 40,476/x
  3. Step 3: Cross multiply
    67,340x = 92,918.24 × 40,476
  4. Step 4: Simplify right side
    67,340x = 3,760,958,682.24
  5. Step 5: Solve for x
    x = 3,760,958,682.24/67,340
  6. Step 6: Final answer
    x = 55,850.29

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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.