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Finding the Fourth Proportional to 89,999.60, 135,021.26 and 27,670.10

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Solution

The fourth proportional to 89,999.60, 135,021.26 and 27,670.10 is: 41,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,999.60 : 135,021.26 = 27,670.10 : x
  2. Step 2: Convert to fraction form
    89,999.60/135,021.26 = 27,670.10/x
  3. Step 3: Cross multiply
    89,999.60x = 135,021.26 × 27,670.10
  4. Step 4: Simplify right side
    89,999.60x = 3,736,051,091.22
  5. Step 5: Solve for x
    x = 3,736,051,091.22/89,999.60
  6. Step 6: Final answer
    x = 41,511.87

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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.