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Finding the Fourth Proportional to 85,189.86, 127,785.26 and 35,242.90

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Solution

The fourth proportional to 85,189.86, 127,785.26 and 35,242.90 is: 52,864.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,189.86 : 127,785.26 = 35,242.90 : x
  2. Step 2: Convert to fraction form
    85,189.86/127,785.26 = 35,242.90/x
  3. Step 3: Cross multiply
    85,189.86x = 127,785.26 × 35,242.90
  4. Step 4: Simplify right side
    85,189.86x = 4,503,522,908.30
  5. Step 5: Solve for x
    x = 4,503,522,908.30/85,189.86
  6. Step 6: Final answer
    x = 52,864.54

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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.