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Finding the Third Proportional to 28,980 and 63,516

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Solution

The third proportional to 28,980 and 63,516 is: 139,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980 : 63,516 = 63,516 : x
  2. Step 2: Convert to fraction form
    28,980/63,516 = 63,516/x
  3. Step 3: Cross multiply
    28,980x = 63,516 × 63,516
  4. Step 4: Simplify right side
    28,980x = 4,034,282,256
  5. Step 5: Solve for x
    x = 4,034,282,256/28,980
  6. Step 6: Final answer
    x = 139,209.19

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.