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Finding the Third Proportional to 42,312 and 92,400

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Solution

The third proportional to 42,312 and 92,400 is: 201,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,312 : 92,400 = 92,400 : x
  2. Step 2: Convert to fraction form
    42,312/92,400 = 92,400/x
  3. Step 3: Cross multiply
    42,312x = 92,400 × 92,400
  4. Step 4: Simplify right side
    42,312x = 8,537,760,000
  5. Step 5: Solve for x
    x = 8,537,760,000/42,312
  6. Step 6: Final answer
    x = 201,781.06

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.