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Finding the Fourth Proportional to 86,002.98, 128,982.60 and 33,383.76

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Solution

The fourth proportional to 86,002.98, 128,982.60 and 33,383.76 is: 50,067.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,002.98 : 128,982.60 = 33,383.76 : x
  2. Step 2: Convert to fraction form
    86,002.98/128,982.60 = 33,383.76/x
  3. Step 3: Cross multiply
    86,002.98x = 128,982.60 × 33,383.76
  4. Step 4: Simplify right side
    86,002.98x = 4,305,924,162.58
  5. Step 5: Solve for x
    x = 4,305,924,162.58/86,002.98
  6. Step 6: Final answer
    x = 50,067.15

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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.