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Finding the Third Proportional to 59,657.50 and 128,660

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Solution

The third proportional to 59,657.50 and 128,660 is: 277,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,657.50 : 128,660 = 128,660 : x
  2. Step 2: Convert to fraction form
    59,657.50/128,660 = 128,660/x
  3. Step 3: Cross multiply
    59,657.50x = 128,660 × 128,660
  4. Step 4: Simplify right side
    59,657.50x = 16,553,395,600
  5. Step 5: Solve for x
    x = 16,553,395,600/59,657.50
  6. Step 6: Final answer
    x = 277,473.84

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.