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Finding the Third Proportional to 46,942 and 72,639

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Solution

The third proportional to 46,942 and 72,639 is: 112,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,942 : 72,639 = 72,639 : x
  2. Step 2: Convert to fraction form
    46,942/72,639 = 72,639/x
  3. Step 3: Cross multiply
    46,942x = 72,639 × 72,639
  4. Step 4: Simplify right side
    46,942x = 5,276,424,321
  5. Step 5: Solve for x
    x = 5,276,424,321/46,942
  6. Step 6: Final answer
    x = 112,403.06

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.