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Finding the Third Proportional to 66,561.75 and 144,784.50

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Solution

The third proportional to 66,561.75 and 144,784.50 is: 314,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,561.75 : 144,784.50 = 144,784.50 : x
  2. Step 2: Convert to fraction form
    66,561.75/144,784.50 = 144,784.50/x
  3. Step 3: Cross multiply
    66,561.75x = 144,784.50 × 144,784.50
  4. Step 4: Simplify right side
    66,561.75x = 20,962,551,440.25
  5. Step 5: Solve for x
    x = 20,962,551,440.25/66,561.75
  6. Step 6: Final answer
    x = 314,933.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.