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Finding the Fourth Proportional to 36,483, 54,724.50 and 8,781

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Solution

The fourth proportional to 36,483, 54,724.50 and 8,781 is: 13,171.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,483 : 54,724.50 = 8,781 : x
  2. Step 2: Convert to fraction form
    36,483/54,724.50 = 8,781/x
  3. Step 3: Cross multiply
    36,483x = 54,724.50 × 8,781
  4. Step 4: Simplify right side
    36,483x = 480,535,834.50
  5. Step 5: Solve for x
    x = 480,535,834.50/36,483
  6. Step 6: Final answer
    x = 13,171.50

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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.