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Finding the Fourth Proportional to 79,941, 119,911.50 and 21,573

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Solution

The fourth proportional to 79,941, 119,911.50 and 21,573 is: 32,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,941 : 119,911.50 = 21,573 : x
  2. Step 2: Convert to fraction form
    79,941/119,911.50 = 21,573/x
  3. Step 3: Cross multiply
    79,941x = 119,911.50 × 21,573
  4. Step 4: Simplify right side
    79,941x = 2,586,850,789.50
  5. Step 5: Solve for x
    x = 2,586,850,789.50/79,941
  6. Step 6: Final answer
    x = 32,359.50

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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.