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Finding the Third Proportional to 28,867.50 and 63,405

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Solution

The third proportional to 28,867.50 and 63,405 is: 139,263.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,867.50 : 63,405 = 63,405 : x
  2. Step 2: Convert to fraction form
    28,867.50/63,405 = 63,405/x
  3. Step 3: Cross multiply
    28,867.50x = 63,405 × 63,405
  4. Step 4: Simplify right side
    28,867.50x = 4,020,194,025
  5. Step 5: Solve for x
    x = 4,020,194,025/28,867.50
  6. Step 6: Final answer
    x = 139,263.67

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.