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Finding the Fourth Proportional to 91,755.52, 126,636.80 and 51,485.56

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Solution

The fourth proportional to 91,755.52, 126,636.80 and 51,485.56 is: 71,058.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,755.52 : 126,636.80 = 51,485.56 : x
  2. Step 2: Convert to fraction form
    91,755.52/126,636.80 = 51,485.56/x
  3. Step 3: Cross multiply
    91,755.52x = 126,636.80 × 51,485.56
  4. Step 4: Simplify right side
    91,755.52x = 6,519,966,564.61
  5. Step 5: Solve for x
    x = 6,519,966,564.61/91,755.52
  6. Step 6: Final answer
    x = 71,058.03

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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.