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Finding the Third Proportional to 28,139.25 and 66,423.75

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Solution

The third proportional to 28,139.25 and 66,423.75 is: 156,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.25 : 66,423.75 = 66,423.75 : x
  2. Step 2: Convert to fraction form
    28,139.25/66,423.75 = 66,423.75/x
  3. Step 3: Cross multiply
    28,139.25x = 66,423.75 × 66,423.75
  4. Step 4: Simplify right side
    28,139.25x = 4,412,114,564.06
  5. Step 5: Solve for x
    x = 4,412,114,564.06/28,139.25
  6. Step 6: Final answer
    x = 156,795.74

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.