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Finding the Fourth Proportional to 77,809.50, 116,691.15 and 33,425.88

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Solution

The fourth proportional to 77,809.50, 116,691.15 and 33,425.88 is: 50,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,809.50 : 116,691.15 = 33,425.88 : x
  2. Step 2: Convert to fraction form
    77,809.50/116,691.15 = 33,425.88/x
  3. Step 3: Cross multiply
    77,809.50x = 116,691.15 × 33,425.88
  4. Step 4: Simplify right side
    77,809.50x = 3,900,504,376.96
  5. Step 5: Solve for x
    x = 3,900,504,376.96/77,809.50
  6. Step 6: Final answer
    x = 50,128.90

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1.5x scale

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.