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Finding the Fourth Proportional to 85,649.64, 128,511.21 and 33,096.03

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Solution

The fourth proportional to 85,649.64, 128,511.21 and 33,096.03 is: 49,658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,649.64 : 128,511.21 = 33,096.03 : x
  2. Step 2: Convert to fraction form
    85,649.64/128,511.21 = 33,096.03/x
  3. Step 3: Cross multiply
    85,649.64x = 128,511.21 × 33,096.03
  4. Step 4: Simplify right side
    85,649.64x = 4,253,210,861.50
  5. Step 5: Solve for x
    x = 4,253,210,861.50/85,649.64
  6. Step 6: Final answer
    x = 49,658.25

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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.