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Finding the Fourth Proportional to 276,948.96, 415,423.44 and 66,586.89

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Solution

The fourth proportional to 276,948.96, 415,423.44 and 66,586.89 is: 99,880.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,948.96 : 415,423.44 = 66,586.89 : x
  2. Step 2: Convert to fraction form
    276,948.96/415,423.44 = 66,586.89/x
  3. Step 3: Cross multiply
    276,948.96x = 415,423.44 × 66,586.89
  4. Step 4: Simplify right side
    276,948.96x = 27,661,754,902.70
  5. Step 5: Solve for x
    x = 27,661,754,902.70/276,948.96
  6. Step 6: Final answer
    x = 99,880.34

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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.