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Finding the Fourth Proportional to 84,273, 126,430.30 and 25,108.44

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Solution

The fourth proportional to 84,273, 126,430.30 and 25,108.44 is: 37,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,273 : 126,430.30 = 25,108.44 : x
  2. Step 2: Convert to fraction form
    84,273/126,430.30 = 25,108.44/x
  3. Step 3: Cross multiply
    84,273x = 126,430.30 × 25,108.44
  4. Step 4: Simplify right side
    84,273x = 3,174,467,601.73
  5. Step 5: Solve for x
    x = 3,174,467,601.73/84,273
  6. Step 6: Final answer
    x = 37,668.86

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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.