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Finding the Third Proportional to 28,756.50 and 64,209

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Solution

The third proportional to 28,756.50 and 64,209 is: 143,369.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,756.50 : 64,209 = 64,209 : x
  2. Step 2: Convert to fraction form
    28,756.50/64,209 = 64,209/x
  3. Step 3: Cross multiply
    28,756.50x = 64,209 × 64,209
  4. Step 4: Simplify right side
    28,756.50x = 4,122,795,681
  5. Step 5: Solve for x
    x = 4,122,795,681/28,756.50
  6. Step 6: Final answer
    x = 143,369.18

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.