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Finding the Fourth Proportional to 85,652.64, 128,515.71 and 33,099.03

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Solution

The fourth proportional to 85,652.64, 128,515.71 and 33,099.03 is: 49,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,652.64 : 128,515.71 = 33,099.03 : x
  2. Step 2: Convert to fraction form
    85,652.64/128,515.71 = 33,099.03/x
  3. Step 3: Cross multiply
    85,652.64x = 128,515.71 × 33,099.03
  4. Step 4: Simplify right side
    85,652.64x = 4,253,745,340.76
  5. Step 5: Solve for x
    x = 4,253,745,340.76/85,652.64
  6. Step 6: Final answer
    x = 49,662.75

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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.