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Finding the Third Proportional to 59,489 and 87,588

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Solution

The third proportional to 59,489 and 87,588 is: 128,959.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,489 : 87,588 = 87,588 : x
  2. Step 2: Convert to fraction form
    59,489/87,588 = 87,588/x
  3. Step 3: Cross multiply
    59,489x = 87,588 × 87,588
  4. Step 4: Simplify right side
    59,489x = 7,671,657,744
  5. Step 5: Solve for x
    x = 7,671,657,744/59,489
  6. Step 6: Final answer
    x = 128,959.27

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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.