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Finding the Fourth Proportional to 62,520, 93,780 and 18,744

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Solution

The fourth proportional to 62,520, 93,780 and 18,744 is: 28,116

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,520 : 93,780 = 18,744 : x
  2. Step 2: Convert to fraction form
    62,520/93,780 = 18,744/x
  3. Step 3: Cross multiply
    62,520x = 93,780 × 18,744
  4. Step 4: Simplify right side
    62,520x = 1,757,812,320
  5. Step 5: Solve for x
    x = 1,757,812,320/62,520
  6. Step 6: Final answer
    x = 28,116

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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.