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Finding the Fourth Proportional to 66,632.82, 99,899.82 and 40,331.31

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Solution

The fourth proportional to 66,632.82, 99,899.82 and 40,331.31 is: 60,467.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.82 : 99,899.82 = 40,331.31 : x
  2. Step 2: Convert to fraction form
    66,632.82/99,899.82 = 40,331.31/x
  3. Step 3: Cross multiply
    66,632.82x = 99,899.82 × 40,331.31
  4. Step 4: Simplify right side
    66,632.82x = 4,029,090,609.36
  5. Step 5: Solve for x
    x = 4,029,090,609.36/66,632.82
  6. Step 6: Final answer
    x = 60,467.06

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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.