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Finding the Third Proportional to 51,439.50 and 77,706

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Solution

The third proportional to 51,439.50 and 77,706 is: 117,384.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.50 : 77,706 = 77,706 : x
  2. Step 2: Convert to fraction form
    51,439.50/77,706 = 77,706/x
  3. Step 3: Cross multiply
    51,439.50x = 77,706 × 77,706
  4. Step 4: Simplify right side
    51,439.50x = 6,038,222,436
  5. Step 5: Solve for x
    x = 6,038,222,436/51,439.50
  6. Step 6: Final answer
    x = 117,384.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.