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Finding the Third Proportional to 28,580.50 and 61,931

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Solution

The third proportional to 28,580.50 and 61,931 is: 134,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.50 : 61,931 = 61,931 : x
  2. Step 2: Convert to fraction form
    28,580.50/61,931 = 61,931/x
  3. Step 3: Cross multiply
    28,580.50x = 61,931 × 61,931
  4. Step 4: Simplify right side
    28,580.50x = 3,835,448,761
  5. Step 5: Solve for x
    x = 3,835,448,761/28,580.50
  6. Step 6: Final answer
    x = 134,198.10

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.