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Finding the Fourth Proportional to 66,379.48, 99,571.64 and 22,010.11

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Solution

The fourth proportional to 66,379.48, 99,571.64 and 22,010.11 is: 33,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.48 : 99,571.64 = 22,010.11 : x
  2. Step 2: Convert to fraction form
    66,379.48/99,571.64 = 22,010.11/x
  3. Step 3: Cross multiply
    66,379.48x = 99,571.64 × 22,010.11
  4. Step 4: Simplify right side
    66,379.48x = 2,191,582,749.28
  5. Step 5: Solve for x
    x = 2,191,582,749.28/66,379.48
  6. Step 6: Final answer
    x = 33,015.97

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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.