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Finding the Fourth Proportional to 98,003.80, 135,241.50 and 53,291.80

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Solution

The fourth proportional to 98,003.80, 135,241.50 and 53,291.80 is: 73,540.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,003.80 : 135,241.50 = 53,291.80 : x
  2. Step 2: Convert to fraction form
    98,003.80/135,241.50 = 53,291.80/x
  3. Step 3: Cross multiply
    98,003.80x = 135,241.50 × 53,291.80
  4. Step 4: Simplify right side
    98,003.80x = 7,207,262,969.70
  5. Step 5: Solve for x
    x = 7,207,262,969.70/98,003.80
  6. Step 6: Final answer
    x = 73,540.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.