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Finding the Fourth Proportional to 144,930.16, 217,372.02 and 39,724.72

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Solution

The fourth proportional to 144,930.16, 217,372.02 and 39,724.72 is: 59,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,930.16 : 217,372.02 = 39,724.72 : x
  2. Step 2: Convert to fraction form
    144,930.16/217,372.02 = 39,724.72/x
  3. Step 3: Cross multiply
    144,930.16x = 217,372.02 × 39,724.72
  4. Step 4: Simplify right side
    144,930.16x = 8,635,042,630.33
  5. Step 5: Solve for x
    x = 8,635,042,630.33/144,930.16
  6. Step 6: Final answer
    x = 59,580.72

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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.