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Finding the Fourth Proportional to 65,171.44, 89,915.67 and 36,486.87

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Solution

The fourth proportional to 65,171.44, 89,915.67 and 36,486.87 is: 50,340.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,171.44 : 89,915.67 = 36,486.87 : x
  2. Step 2: Convert to fraction form
    65,171.44/89,915.67 = 36,486.87/x
  3. Step 3: Cross multiply
    65,171.44x = 89,915.67 × 36,486.87
  4. Step 4: Simplify right side
    65,171.44x = 3,280,741,530.84
  5. Step 5: Solve for x
    x = 3,280,741,530.84/65,171.44
  6. Step 6: Final answer
    x = 50,340.18

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1.5x scale

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.