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Finding the Fourth Proportional to 85,274.67, 127,927.80 and 29,111.70

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Solution

The fourth proportional to 85,274.67, 127,927.80 and 29,111.70 is: 43,672.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,274.67 : 127,927.80 = 29,111.70 : x
  2. Step 2: Convert to fraction form
    85,274.67/127,927.80 = 29,111.70/x
  3. Step 3: Cross multiply
    85,274.67x = 127,927.80 × 29,111.70
  4. Step 4: Simplify right side
    85,274.67x = 3,724,195,735.26
  5. Step 5: Solve for x
    x = 3,724,195,735.26/85,274.67
  6. Step 6: Final answer
    x = 43,672.94

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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.