Home / 91,968.92-126,920.10-51,690.44

Finding the Fourth Proportional to 91,968.92, 126,920.10 and 51,690.44

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Solution

The fourth proportional to 91,968.92, 126,920.10 and 51,690.44 is: 71,334.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,968.92 : 126,920.10 = 51,690.44 : x
  2. Step 2: Convert to fraction form
    91,968.92/126,920.10 = 51,690.44/x
  3. Step 3: Cross multiply
    91,968.92x = 126,920.10 × 51,690.44
  4. Step 4: Simplify right side
    91,968.92x = 6,560,555,813.84
  5. Step 5: Solve for x
    x = 6,560,555,813.84/91,968.92
  6. Step 6: Final answer
    x = 71,334.49

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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.