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Finding the Fourth Proportional to 84,672.54, 127,010.61 and 28,514.34

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Solution

The fourth proportional to 84,672.54, 127,010.61 and 28,514.34 is: 42,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.54 : 127,010.61 = 28,514.34 : x
  2. Step 2: Convert to fraction form
    84,672.54/127,010.61 = 28,514.34/x
  3. Step 3: Cross multiply
    84,672.54x = 127,010.61 × 28,514.34
  4. Step 4: Simplify right side
    84,672.54x = 3,621,623,717.15
  5. Step 5: Solve for x
    x = 3,621,623,717.15/84,672.54
  6. Step 6: Final answer
    x = 42,772.12

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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.