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Finding the Third Proportional to 72,036 and 96,390

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Solution

The third proportional to 72,036 and 96,390 is: 128,977.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036 : 96,390 = 96,390 : x
  2. Step 2: Convert to fraction form
    72,036/96,390 = 96,390/x
  3. Step 3: Cross multiply
    72,036x = 96,390 × 96,390
  4. Step 4: Simplify right side
    72,036x = 9,291,032,100
  5. Step 5: Solve for x
    x = 9,291,032,100/72,036
  6. Step 6: Final answer
    x = 128,977.62

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.