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Finding the Third Proportional to 28,129.50 and 66,403.13

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Solution

The third proportional to 28,129.50 and 66,403.13 is: 156,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.50 : 66,403.13 = 66,403.13 : x
  2. Step 2: Convert to fraction form
    28,129.50/66,403.13 = 66,403.13/x
  3. Step 3: Cross multiply
    28,129.50x = 66,403.13 × 66,403.13
  4. Step 4: Simplify right side
    28,129.50x = 4,409,375,009.77
  5. Step 5: Solve for x
    x = 4,409,375,009.77/28,129.50
  6. Step 6: Final answer
    x = 156,752.70

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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.