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Finding the Third Proportional to 28,116 and 39,558

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Solution

The third proportional to 28,116 and 39,558 is: 55,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116 : 39,558 = 39,558 : x
  2. Step 2: Convert to fraction form
    28,116/39,558 = 39,558/x
  3. Step 3: Cross multiply
    28,116x = 39,558 × 39,558
  4. Step 4: Simplify right side
    28,116x = 1,564,835,364
  5. Step 5: Solve for x
    x = 1,564,835,364/28,116
  6. Step 6: Final answer
    x = 55,656.40

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.