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Finding the Fourth Proportional to 84,427, 126,640.62 and 29,023

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Solution

The fourth proportional to 84,427, 126,640.62 and 29,023 is: 43,534.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,427 : 126,640.62 = 29,023 : x
  2. Step 2: Convert to fraction form
    84,427/126,640.62 = 29,023/x
  3. Step 3: Cross multiply
    84,427x = 126,640.62 × 29,023
  4. Step 4: Simplify right side
    84,427x = 3,675,490,714.26
  5. Step 5: Solve for x
    x = 3,675,490,714.26/84,427
  6. Step 6: Final answer
    x = 43,534.54

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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.