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Finding the Fourth Proportional to 115,490, 173,235 and 27,938

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Solution

The fourth proportional to 115,490, 173,235 and 27,938 is: 41,907

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,490 : 173,235 = 27,938 : x
  2. Step 2: Convert to fraction form
    115,490/173,235 = 27,938/x
  3. Step 3: Cross multiply
    115,490x = 173,235 × 27,938
  4. Step 4: Simplify right side
    115,490x = 4,839,839,430
  5. Step 5: Solve for x
    x = 4,839,839,430/115,490
  6. Step 6: Final answer
    x = 41,907

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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.