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Finding the Fourth Proportional to 85,260.68, 127,855.83 and 29,105.31

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Solution

The fourth proportional to 85,260.68, 127,855.83 and 29,105.31 is: 43,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,260.68 : 127,855.83 = 29,105.31 : x
  2. Step 2: Convert to fraction form
    85,260.68/127,855.83 = 29,105.31/x
  3. Step 3: Cross multiply
    85,260.68x = 127,855.83 × 29,105.31
  4. Step 4: Simplify right side
    85,260.68x = 3,721,283,741.57
  5. Step 5: Solve for x
    x = 3,721,283,741.57/85,260.68
  6. Step 6: Final answer
    x = 43,645.96

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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.