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Finding the Fourth Proportional to 91,860.69, 126,757.94 and 51,578.88

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Solution

The fourth proportional to 91,860.69, 126,757.94 and 51,578.88 is: 71,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,860.69 : 126,757.94 = 51,578.88 : x
  2. Step 2: Convert to fraction form
    91,860.69/126,757.94 = 51,578.88/x
  3. Step 3: Cross multiply
    91,860.69x = 126,757.94 × 51,578.88
  4. Step 4: Simplify right side
    91,860.69x = 6,538,032,576.31
  5. Step 5: Solve for x
    x = 6,538,032,576.31/91,860.69
  6. Step 6: Final answer
    x = 71,173.34

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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.