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Finding the Third Proportional to 53,989.50 and 84,042

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Solution

The third proportional to 53,989.50 and 84,042 is: 130,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,989.50 : 84,042 = 84,042 : x
  2. Step 2: Convert to fraction form
    53,989.50/84,042 = 84,042/x
  3. Step 3: Cross multiply
    53,989.50x = 84,042 × 84,042
  4. Step 4: Simplify right side
    53,989.50x = 7,063,057,764
  5. Step 5: Solve for x
    x = 7,063,057,764/53,989.50
  6. Step 6: Final answer
    x = 130,822.80

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.