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Finding the Third Proportional to 55,042 and 87,473

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Solution

The third proportional to 55,042 and 87,473 is: 139,012.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,042 : 87,473 = 87,473 : x
  2. Step 2: Convert to fraction form
    55,042/87,473 = 87,473/x
  3. Step 3: Cross multiply
    55,042x = 87,473 × 87,473
  4. Step 4: Simplify right side
    55,042x = 7,651,525,729
  5. Step 5: Solve for x
    x = 7,651,525,729/55,042
  6. Step 6: Final answer
    x = 139,012.49

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.