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Finding the Fourth Proportional to 90,708.56, 125,180.52 and 54,905.12

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Solution

The fourth proportional to 90,708.56, 125,180.52 and 54,905.12 is: 75,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.56 : 125,180.52 = 54,905.12 : x
  2. Step 2: Convert to fraction form
    90,708.56/125,180.52 = 54,905.12/x
  3. Step 3: Cross multiply
    90,708.56x = 125,180.52 × 54,905.12
  4. Step 4: Simplify right side
    90,708.56x = 6,873,051,472.26
  5. Step 5: Solve for x
    x = 6,873,051,472.26/90,708.56
  6. Step 6: Final answer
    x = 75,770.70

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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.