Home / 91,517.09-126,279.05-51,232.55

Finding the Fourth Proportional to 91,517.09, 126,279.05 and 51,232.55

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Solution

The fourth proportional to 91,517.09, 126,279.05 and 51,232.55 is: 70,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,517.09 : 126,279.05 = 51,232.55 : x
  2. Step 2: Convert to fraction form
    91,517.09/126,279.05 = 51,232.55/x
  3. Step 3: Cross multiply
    91,517.09x = 126,279.05 × 51,232.55
  4. Step 4: Simplify right side
    91,517.09x = 6,469,596,855.52
  5. Step 5: Solve for x
    x = 6,469,596,855.52/91,517.09
  6. Step 6: Final answer
    x = 70,692.78

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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.