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Finding the Third Proportional to 50,240 and 77,840

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Solution

The third proportional to 50,240 and 77,840 is: 120,602.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,240 : 77,840 = 77,840 : x
  2. Step 2: Convert to fraction form
    50,240/77,840 = 77,840/x
  3. Step 3: Cross multiply
    50,240x = 77,840 × 77,840
  4. Step 4: Simplify right side
    50,240x = 6,059,065,600
  5. Step 5: Solve for x
    x = 6,059,065,600/50,240
  6. Step 6: Final answer
    x = 120,602.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.