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Finding the Fourth Proportional to 40,349, 60,533.22 and 12,647

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Solution

The fourth proportional to 40,349, 60,533.22 and 12,647 is: 18,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,349 : 60,533.22 = 12,647 : x
  2. Step 2: Convert to fraction form
    40,349/60,533.22 = 12,647/x
  3. Step 3: Cross multiply
    40,349x = 60,533.22 × 12,647
  4. Step 4: Simplify right side
    40,349x = 765,563,633.34
  5. Step 5: Solve for x
    x = 765,563,633.34/40,349
  6. Step 6: Final answer
    x = 18,973.55

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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.