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Finding the Fourth Proportional to 276,936.74, 415,404.96 and 66,574.62

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Solution

The fourth proportional to 276,936.74, 415,404.96 and 66,574.62 is: 99,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,936.74 : 415,404.96 = 66,574.62 : x
  2. Step 2: Convert to fraction form
    276,936.74/415,404.96 = 66,574.62/x
  3. Step 3: Cross multiply
    276,936.74x = 415,404.96 × 66,574.62
  4. Step 4: Simplify right side
    276,936.74x = 27,655,427,358.12
  5. Step 5: Solve for x
    x = 27,655,427,358.12/276,936.74
  6. Step 6: Final answer
    x = 99,861.89

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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.