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Finding the Third Proportional to 58,411 and 91,509

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Solution

The third proportional to 58,411 and 91,509 is: 143,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,411 : 91,509 = 91,509 : x
  2. Step 2: Convert to fraction form
    58,411/91,509 = 91,509/x
  3. Step 3: Cross multiply
    58,411x = 91,509 × 91,509
  4. Step 4: Simplify right side
    58,411x = 8,373,897,081
  5. Step 5: Solve for x
    x = 8,373,897,081/58,411
  6. Step 6: Final answer
    x = 143,361.65

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.