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Finding the Fourth Proportional to 85,250.76, 127,786.95 and 29,071.19

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Solution

The fourth proportional to 85,250.76, 127,786.95 and 29,071.19 is: 43,576.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,250.76 : 127,786.95 = 29,071.19 : x
  2. Step 2: Convert to fraction form
    85,250.76/127,786.95 = 29,071.19/x
  3. Step 3: Cross multiply
    85,250.76x = 127,786.95 × 29,071.19
  4. Step 4: Simplify right side
    85,250.76x = 3,714,918,064.04
  5. Step 5: Solve for x
    x = 3,714,918,064.04/85,250.76
  6. Step 6: Final answer
    x = 43,576.36

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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.