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Finding the Fourth Proportional to 81,960.62, 122,999.25 and 63,259.34

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Solution

The fourth proportional to 81,960.62, 122,999.25 and 63,259.34 is: 94,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,960.62 : 122,999.25 = 63,259.34 : x
  2. Step 2: Convert to fraction form
    81,960.62/122,999.25 = 63,259.34/x
  3. Step 3: Cross multiply
    81,960.62x = 122,999.25 × 63,259.34
  4. Step 4: Simplify right side
    81,960.62x = 7,780,851,375.50
  5. Step 5: Solve for x
    x = 7,780,851,375.50/81,960.62
  6. Step 6: Final answer
    x = 94,934.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.