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Finding the Fourth Proportional to 90,676.90, 125,126.17 and 50,388.11

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Solution

The fourth proportional to 90,676.90, 125,126.17 and 50,388.11 is: 69,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,676.90 : 125,126.17 = 50,388.11 : x
  2. Step 2: Convert to fraction form
    90,676.90/125,126.17 = 50,388.11/x
  3. Step 3: Cross multiply
    90,676.90x = 125,126.17 × 50,388.11
  4. Step 4: Simplify right side
    90,676.90x = 6,304,871,217.84
  5. Step 5: Solve for x
    x = 6,304,871,217.84/90,676.90
  6. Step 6: Final answer
    x = 69,531.17

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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.