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Finding the Third Proportional to 77,630.63 and 109,869.75

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Solution

The third proportional to 77,630.63 and 109,869.75 is: 155,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.63 : 109,869.75 = 109,869.75 : x
  2. Step 2: Convert to fraction form
    77,630.63/109,869.75 = 109,869.75/x
  3. Step 3: Cross multiply
    77,630.63x = 109,869.75 × 109,869.75
  4. Step 4: Simplify right side
    77,630.63x = 12,071,361,965.06
  5. Step 5: Solve for x
    x = 12,071,361,965.06/77,630.63
  6. Step 6: Final answer
    x = 155,497.42

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.