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Finding the Third Proportional to 58,480 and 91,135

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Solution

The third proportional to 58,480 and 91,135 is: 142,024.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,480 : 91,135 = 91,135 : x
  2. Step 2: Convert to fraction form
    58,480/91,135 = 91,135/x
  3. Step 3: Cross multiply
    58,480x = 91,135 × 91,135
  4. Step 4: Simplify right side
    58,480x = 8,305,588,225
  5. Step 5: Solve for x
    x = 8,305,588,225/58,480
  6. Step 6: Final answer
    x = 142,024.42

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.