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Finding the Third Proportional to 29,157 and 78,543.50

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Solution

The third proportional to 29,157 and 78,543.50 is: 211,581.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,157 : 78,543.50 = 78,543.50 : x
  2. Step 2: Convert to fraction form
    29,157/78,543.50 = 78,543.50/x
  3. Step 3: Cross multiply
    29,157x = 78,543.50 × 78,543.50
  4. Step 4: Simplify right side
    29,157x = 6,169,081,392.25
  5. Step 5: Solve for x
    x = 6,169,081,392.25/29,157
  6. Step 6: Final answer
    x = 211,581.49

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.