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Finding the Fourth Proportional to 74,760.84, 103,171.32 and 40,769.73

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Solution

The fourth proportional to 74,760.84, 103,171.32 and 40,769.73 is: 56,262.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,760.84 : 103,171.32 = 40,769.73 : x
  2. Step 2: Convert to fraction form
    74,760.84/103,171.32 = 40,769.73/x
  3. Step 3: Cross multiply
    74,760.84x = 103,171.32 × 40,769.73
  4. Step 4: Simplify right side
    74,760.84x = 4,206,266,860.14
  5. Step 5: Solve for x
    x = 4,206,266,860.14/74,760.84
  6. Step 6: Final answer
    x = 56,262.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.