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Finding the Fourth Proportional to 276,939.74, 415,409.46 and 66,577.62

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Solution

The fourth proportional to 276,939.74, 415,409.46 and 66,577.62 is: 99,866.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,939.74 : 415,409.46 = 66,577.62 : x
  2. Step 2: Convert to fraction form
    276,939.74/415,409.46 = 66,577.62/x
  3. Step 3: Cross multiply
    276,939.74x = 415,409.46 × 66,577.62
  4. Step 4: Simplify right side
    276,939.74x = 27,656,973,172.29
  5. Step 5: Solve for x
    x = 27,656,973,172.29/276,939.74
  6. Step 6: Final answer
    x = 99,866.39

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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.