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Finding the Fourth Proportional to 91,679.97, 126,517.58 and 51,393.60

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Solution

The fourth proportional to 91,679.97, 126,517.58 and 51,393.60 is: 70,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,679.97 : 126,517.58 = 51,393.60 : x
  2. Step 2: Convert to fraction form
    91,679.97/126,517.58 = 51,393.60/x
  3. Step 3: Cross multiply
    91,679.97x = 126,517.58 × 51,393.60
  4. Step 4: Simplify right side
    91,679.97x = 6,502,193,899.49
  5. Step 5: Solve for x
    x = 6,502,193,899.49/91,679.97
  6. Step 6: Final answer
    x = 70,922.73

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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.