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Finding the Third Proportional to 55,628 and 84,820

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Solution

The third proportional to 55,628 and 84,820 is: 129,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,628 : 84,820 = 84,820 : x
  2. Step 2: Convert to fraction form
    55,628/84,820 = 84,820/x
  3. Step 3: Cross multiply
    55,628x = 84,820 × 84,820
  4. Step 4: Simplify right side
    55,628x = 7,194,432,400
  5. Step 5: Solve for x
    x = 7,194,432,400/55,628
  6. Step 6: Final answer
    x = 129,331.14

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.