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Finding the Fourth Proportional to 74,243.70, 111,371.04 and 21,654.54

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Solution

The fourth proportional to 74,243.70, 111,371.04 and 21,654.54 is: 32,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,243.70 : 111,371.04 = 21,654.54 : x
  2. Step 2: Convert to fraction form
    74,243.70/111,371.04 = 21,654.54/x
  3. Step 3: Cross multiply
    74,243.70x = 111,371.04 × 21,654.54
  4. Step 4: Simplify right side
    74,243.70x = 2,411,688,640.52
  5. Step 5: Solve for x
    x = 2,411,688,640.52/74,243.70
  6. Step 6: Final answer
    x = 32,483.41

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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.