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Finding the Fourth Proportional to 65,481.10, 90,364.54 and 37,186.99

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Solution

The fourth proportional to 65,481.10, 90,364.54 and 37,186.99 is: 51,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,481.10 : 90,364.54 = 37,186.99 : x
  2. Step 2: Convert to fraction form
    65,481.10/90,364.54 = 37,186.99/x
  3. Step 3: Cross multiply
    65,481.10x = 90,364.54 × 37,186.99
  4. Step 4: Simplify right side
    65,481.10x = 3,360,385,245.33
  5. Step 5: Solve for x
    x = 3,360,385,245.33/65,481.10
  6. Step 6: Final answer
    x = 51,318.40

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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.