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Finding the Third Proportional to 28,752 and 61,878

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Solution

The third proportional to 28,752 and 61,878 is: 133,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,752 : 61,878 = 61,878 : x
  2. Step 2: Convert to fraction form
    28,752/61,878 = 61,878/x
  3. Step 3: Cross multiply
    28,752x = 61,878 × 61,878
  4. Step 4: Simplify right side
    28,752x = 3,828,886,884
  5. Step 5: Solve for x
    x = 3,828,886,884/28,752
  6. Step 6: Final answer
    x = 133,169.41

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.