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Finding the Fourth Proportional to 90,755.88, 125,254.28 and 54,958.34

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Solution

The fourth proportional to 90,755.88, 125,254.28 and 54,958.34 is: 75,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,755.88 : 125,254.28 = 54,958.34 : x
  2. Step 2: Convert to fraction form
    90,755.88/125,254.28 = 54,958.34/x
  3. Step 3: Cross multiply
    90,755.88x = 125,254.28 × 54,958.34
  4. Step 4: Simplify right side
    90,755.88x = 6,883,767,306.70
  5. Step 5: Solve for x
    x = 6,883,767,306.70/90,755.88
  6. Step 6: Final answer
    x = 75,849.27

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1.5x scale

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.