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Finding the Fourth Proportional to 65,171.03, 89,915.12 and 36,486.48

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Solution

The fourth proportional to 65,171.03, 89,915.12 and 36,486.48 is: 50,339.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,171.03 : 89,915.12 = 36,486.48 : x
  2. Step 2: Convert to fraction form
    65,171.03/89,915.12 = 36,486.48/x
  3. Step 3: Cross multiply
    65,171.03x = 89,915.12 × 36,486.48
  4. Step 4: Simplify right side
    65,171.03x = 3,280,686,045.15
  5. Step 5: Solve for x
    x = 3,280,686,045.15/65,171.03
  6. Step 6: Final answer
    x = 50,339.64

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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.