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Finding the Fourth Proportional to 40,178, 60,267 and 15,554

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Solution

The fourth proportional to 40,178, 60,267 and 15,554 is: 23,331

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,178 : 60,267 = 15,554 : x
  2. Step 2: Convert to fraction form
    40,178/60,267 = 15,554/x
  3. Step 3: Cross multiply
    40,178x = 60,267 × 15,554
  4. Step 4: Simplify right side
    40,178x = 937,392,918
  5. Step 5: Solve for x
    x = 937,392,918/40,178
  6. Step 6: Final answer
    x = 23,331

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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.