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Finding the Fourth Proportional to 89,172.35, 133,719.63 and 33,729.47

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Solution

The fourth proportional to 89,172.35, 133,719.63 and 33,729.47 is: 50,579.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,172.35 : 133,719.63 = 33,729.47 : x
  2. Step 2: Convert to fraction form
    89,172.35/133,719.63 = 33,729.47/x
  3. Step 3: Cross multiply
    89,172.35x = 133,719.63 × 33,729.47
  4. Step 4: Simplify right side
    89,172.35x = 4,510,291,954.86
  5. Step 5: Solve for x
    x = 4,510,291,954.86/89,172.35
  6. Step 6: Final answer
    x = 50,579.49

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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.