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Finding the Fourth Proportional to 108,649.80, 162,858.60 and 45,453.96

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Solution

The fourth proportional to 108,649.80, 162,858.60 and 45,453.96 is: 68,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,649.80 : 162,858.60 = 45,453.96 : x
  2. Step 2: Convert to fraction form
    108,649.80/162,858.60 = 45,453.96/x
  3. Step 3: Cross multiply
    108,649.80x = 162,858.60 × 45,453.96
  4. Step 4: Simplify right side
    108,649.80x = 7,402,568,290.06
  5. Step 5: Solve for x
    x = 7,402,568,290.06/108,649.80
  6. Step 6: Final answer
    x = 68,132.37

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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.