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Finding the Fourth Proportional to 48,630.78, 72,916.94 and 19,013.34

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Solution

The fourth proportional to 48,630.78, 72,916.94 and 19,013.34 is: 28,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,630.78 : 72,916.94 = 19,013.34 : x
  2. Step 2: Convert to fraction form
    48,630.78/72,916.94 = 19,013.34/x
  3. Step 3: Cross multiply
    48,630.78x = 72,916.94 × 19,013.34
  4. Step 4: Simplify right side
    48,630.78x = 1,386,394,571.98
  5. Step 5: Solve for x
    x = 1,386,394,571.98/48,630.78
  6. Step 6: Final answer
    x = 28,508.58

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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.