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Finding the Fourth Proportional to 85,170.60, 127,834.74 and 43,080.48

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Solution

The fourth proportional to 85,170.60, 127,834.74 and 43,080.48 is: 64,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,170.60 : 127,834.74 = 43,080.48 : x
  2. Step 2: Convert to fraction form
    85,170.60/127,834.74 = 43,080.48/x
  3. Step 3: Cross multiply
    85,170.60x = 127,834.74 × 43,080.48
  4. Step 4: Simplify right side
    85,170.60x = 5,507,181,959.88
  5. Step 5: Solve for x
    x = 5,507,181,959.88/85,170.60
  6. Step 6: Final answer
    x = 64,660.60

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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.