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Finding the Fourth Proportional to 63,489.72, 87,613.74 and 38,334.84

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Solution

The fourth proportional to 63,489.72, 87,613.74 and 38,334.84 is: 52,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,489.72 : 87,613.74 = 38,334.84 : x
  2. Step 2: Convert to fraction form
    63,489.72/87,613.74 = 38,334.84/x
  3. Step 3: Cross multiply
    63,489.72x = 87,613.74 × 38,334.84
  4. Step 4: Simplify right side
    63,489.72x = 3,358,658,704.70
  5. Step 5: Solve for x
    x = 3,358,658,704.70/63,489.72
  6. Step 6: Final answer
    x = 52,900.83

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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.