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Finding the Fourth Proportional to 85,996.66, 128,944.88 and 33,344.64

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Solution

The fourth proportional to 85,996.66, 128,944.88 and 33,344.64 is: 49,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,996.66 : 128,944.88 = 33,344.64 : x
  2. Step 2: Convert to fraction form
    85,996.66/128,944.88 = 33,344.64/x
  3. Step 3: Cross multiply
    85,996.66x = 128,944.88 × 33,344.64
  4. Step 4: Simplify right side
    85,996.66x = 4,299,620,603.44
  5. Step 5: Solve for x
    x = 4,299,620,603.44/85,996.66
  6. Step 6: Final answer
    x = 49,997.53

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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.