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Finding the Fourth Proportional to 85,652.96, 128,405.61 and 33,099.32

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Solution

The fourth proportional to 85,652.96, 128,405.61 and 33,099.32 is: 49,620.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,652.96 : 128,405.61 = 33,099.32 : x
  2. Step 2: Convert to fraction form
    85,652.96/128,405.61 = 33,099.32/x
  3. Step 3: Cross multiply
    85,652.96x = 128,405.61 × 33,099.32
  4. Step 4: Simplify right side
    85,652.96x = 4,250,138,375.19
  5. Step 5: Solve for x
    x = 4,250,138,375.19/85,652.96
  6. Step 6: Final answer
    x = 49,620.45

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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.