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Finding the Third Proportional to 45,120.75 and 66,142.13

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Solution

The third proportional to 45,120.75 and 66,142.13 is: 96,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,120.75 : 66,142.13 = 66,142.13 : x
  2. Step 2: Convert to fraction form
    45,120.75/66,142.13 = 66,142.13/x
  3. Step 3: Cross multiply
    45,120.75x = 66,142.13 × 66,142.13
  4. Step 4: Simplify right side
    45,120.75x = 4,374,780,699.52
  5. Step 5: Solve for x
    x = 4,374,780,699.52/45,120.75
  6. Step 6: Final answer
    x = 96,957.18

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.