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Finding the Third Proportional to 51,810.50 and 61,379

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Solution

The third proportional to 51,810.50 and 61,379 is: 72,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,810.50 : 61,379 = 61,379 : x
  2. Step 2: Convert to fraction form
    51,810.50/61,379 = 61,379/x
  3. Step 3: Cross multiply
    51,810.50x = 61,379 × 61,379
  4. Step 4: Simplify right side
    51,810.50x = 3,767,381,641
  5. Step 5: Solve for x
    x = 3,767,381,641/51,810.50
  6. Step 6: Final answer
    x = 72,714.64

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.