Home / 65,481.53-90,375.35-38,630.61

Finding the Fourth Proportional to 65,481.53, 90,375.35 and 38,630.61

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Solution

The fourth proportional to 65,481.53, 90,375.35 and 38,630.61 is: 53,316.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,481.53 : 90,375.35 = 38,630.61 : x
  2. Step 2: Convert to fraction form
    65,481.53/90,375.35 = 38,630.61/x
  3. Step 3: Cross multiply
    65,481.53x = 90,375.35 × 38,630.61
  4. Step 4: Simplify right side
    65,481.53x = 3,491,254,706.31
  5. Step 5: Solve for x
    x = 3,491,254,706.31/65,481.53
  6. Step 6: Final answer
    x = 53,316.64

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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.