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Finding the Third Proportional to 66,931.50 and 103,636.50

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Solution

The third proportional to 66,931.50 and 103,636.50 is: 160,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.50 : 103,636.50 = 103,636.50 : x
  2. Step 2: Convert to fraction form
    66,931.50/103,636.50 = 103,636.50/x
  3. Step 3: Cross multiply
    66,931.50x = 103,636.50 × 103,636.50
  4. Step 4: Simplify right side
    66,931.50x = 10,740,524,132.25
  5. Step 5: Solve for x
    x = 10,740,524,132.25/66,931.50
  6. Step 6: Final answer
    x = 160,470.39

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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.