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Finding the Fourth Proportional to 91,856.88, 126,764.82 and 51,573.78

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Solution

The fourth proportional to 91,856.88, 126,764.82 and 51,573.78 is: 71,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.88 : 126,764.82 = 51,573.78 : x
  2. Step 2: Convert to fraction form
    91,856.88/126,764.82 = 51,573.78/x
  3. Step 3: Cross multiply
    91,856.88x = 126,764.82 × 51,573.78
  4. Step 4: Simplify right side
    91,856.88x = 6,537,740,938.42
  5. Step 5: Solve for x
    x = 6,537,740,938.42/91,856.88
  6. Step 6: Final answer
    x = 71,173.12

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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.