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Finding the Third Proportional to 58,600 and 90,810

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Solution

The third proportional to 58,600 and 90,810 is: 140,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,600 : 90,810 = 90,810 : x
  2. Step 2: Convert to fraction form
    58,600/90,810 = 90,810/x
  3. Step 3: Cross multiply
    58,600x = 90,810 × 90,810
  4. Step 4: Simplify right side
    58,600x = 8,246,456,100
  5. Step 5: Solve for x
    x = 8,246,456,100/58,600
  6. Step 6: Final answer
    x = 140,724.51

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.