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Finding the Fourth Proportional to 81,964.80, 123,062.40 and 50,860.80

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Solution

The fourth proportional to 81,964.80, 123,062.40 and 50,860.80 is: 76,362.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.80 : 123,062.40 = 50,860.80 : x
  2. Step 2: Convert to fraction form
    81,964.80/123,062.40 = 50,860.80/x
  3. Step 3: Cross multiply
    81,964.80x = 123,062.40 × 50,860.80
  4. Step 4: Simplify right side
    81,964.80x = 6,259,052,113.92
  5. Step 5: Solve for x
    x = 6,259,052,113.92/81,964.80
  6. Step 6: Final answer
    x = 76,362.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.