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Finding the Fourth Proportional to 63,708, 87,912.88 and 35,412.64

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Solution

The fourth proportional to 63,708, 87,912.88 and 35,412.64 is: 48,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,708 : 87,912.88 = 35,412.64 : x
  2. Step 2: Convert to fraction form
    63,708/87,912.88 = 35,412.64/x
  3. Step 3: Cross multiply
    63,708x = 87,912.88 × 35,412.64
  4. Step 4: Simplify right side
    63,708x = 3,113,227,170.80
  5. Step 5: Solve for x
    x = 3,113,227,170.80/63,708
  6. Step 6: Final answer
    x = 48,867.13

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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.