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Finding the Third Proportional to 42,246 and 53,487

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Solution

The third proportional to 42,246 and 53,487 is: 67,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,246 : 53,487 = 53,487 : x
  2. Step 2: Convert to fraction form
    42,246/53,487 = 53,487/x
  3. Step 3: Cross multiply
    42,246x = 53,487 × 53,487
  4. Step 4: Simplify right side
    42,246x = 2,860,859,169
  5. Step 5: Solve for x
    x = 2,860,859,169/42,246
  6. Step 6: Final answer
    x = 67,719.05

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.