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Finding the Third Proportional to 61,510 and 91,942

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Solution

The third proportional to 61,510 and 91,942 is: 137,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,510 : 91,942 = 91,942 : x
  2. Step 2: Convert to fraction form
    61,510/91,942 = 91,942/x
  3. Step 3: Cross multiply
    61,510x = 91,942 × 91,942
  4. Step 4: Simplify right side
    61,510x = 8,453,331,364
  5. Step 5: Solve for x
    x = 8,453,331,364/61,510
  6. Step 6: Final answer
    x = 137,430.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.