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Finding the Fourth Proportional to 40,452, 60,678 and 12,750

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Solution

The fourth proportional to 40,452, 60,678 and 12,750 is: 19,125

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,452 : 60,678 = 12,750 : x
  2. Step 2: Convert to fraction form
    40,452/60,678 = 12,750/x
  3. Step 3: Cross multiply
    40,452x = 60,678 × 12,750
  4. Step 4: Simplify right side
    40,452x = 773,644,500
  5. Step 5: Solve for x
    x = 773,644,500/40,452
  6. Step 6: Final answer
    x = 19,125

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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.