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Finding the Fourth Proportional to 91,668, 126,506.82 and 51,394.68

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Solution

The fourth proportional to 91,668, 126,506.82 and 51,394.68 is: 70,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,668 : 126,506.82 = 51,394.68 : x
  2. Step 2: Convert to fraction form
    91,668/126,506.82 = 51,394.68/x
  3. Step 3: Cross multiply
    91,668x = 126,506.82 × 51,394.68
  4. Step 4: Simplify right side
    91,668x = 6,501,777,531.72
  5. Step 5: Solve for x
    x = 6,501,777,531.72/91,668
  6. Step 6: Final answer
    x = 70,927.45

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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.