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Finding the Third Proportional to 28,140.75 and 43,560

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Solution

The third proportional to 28,140.75 and 43,560 is: 67,427.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.75 : 43,560 = 43,560 : x
  2. Step 2: Convert to fraction form
    28,140.75/43,560 = 43,560/x
  3. Step 3: Cross multiply
    28,140.75x = 43,560 × 43,560
  4. Step 4: Simplify right side
    28,140.75x = 1,897,473,600
  5. Step 5: Solve for x
    x = 1,897,473,600/28,140.75
  6. Step 6: Final answer
    x = 67,427.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.