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Finding the Fourth Proportional to 85,076.60, 127,520.88 and 35,129.16

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Solution

The fourth proportional to 85,076.60, 127,520.88 and 35,129.16 is: 52,654.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,076.60 : 127,520.88 = 35,129.16 : x
  2. Step 2: Convert to fraction form
    85,076.60/127,520.88 = 35,129.16/x
  3. Step 3: Cross multiply
    85,076.60x = 127,520.88 × 35,129.16
  4. Step 4: Simplify right side
    85,076.60x = 4,479,701,396.86
  5. Step 5: Solve for x
    x = 4,479,701,396.86/85,076.60
  6. Step 6: Final answer
    x = 52,654.92

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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.