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Finding the Fourth Proportional to 65,085.13, 89,815.62 and 36,403.03

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Solution

The fourth proportional to 65,085.13, 89,815.62 and 36,403.03 is: 50,235.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,085.13 : 89,815.62 = 36,403.03 : x
  2. Step 2: Convert to fraction form
    65,085.13/89,815.62 = 36,403.03/x
  3. Step 3: Cross multiply
    65,085.13x = 89,815.62 × 36,403.03
  4. Step 4: Simplify right side
    65,085.13x = 3,269,560,709.33
  5. Step 5: Solve for x
    x = 3,269,560,709.33/65,085.13
  6. Step 6: Final answer
    x = 50,235.14

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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.