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Finding the Fourth Proportional to 89,179.96, 133,721.58 and 39,201.58

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Solution

The fourth proportional to 89,179.96, 133,721.58 and 39,201.58 is: 58,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,179.96 : 133,721.58 = 39,201.58 : x
  2. Step 2: Convert to fraction form
    89,179.96/133,721.58 = 39,201.58/x
  3. Step 3: Cross multiply
    89,179.96x = 133,721.58 × 39,201.58
  4. Step 4: Simplify right side
    89,179.96x = 5,242,097,216.10
  5. Step 5: Solve for x
    x = 5,242,097,216.10/89,179.96
  6. Step 6: Final answer
    x = 58,781.11

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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.