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Finding the Fourth Proportional to 85,773.30, 128,683.02 and 35,836.80

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Solution

The fourth proportional to 85,773.30, 128,683.02 and 35,836.80 is: 53,764.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,773.30 : 128,683.02 = 35,836.80 : x
  2. Step 2: Convert to fraction form
    85,773.30/128,683.02 = 35,836.80/x
  3. Step 3: Cross multiply
    85,773.30x = 128,683.02 × 35,836.80
  4. Step 4: Simplify right side
    85,773.30x = 4,611,587,651.14
  5. Step 5: Solve for x
    x = 4,611,587,651.14/85,773.30
  6. Step 6: Final answer
    x = 53,764.84

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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.