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Finding the Fourth Proportional to 63,678.72, 87,876 and 35,383.80

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Solution

The fourth proportional to 63,678.72, 87,876 and 35,383.80 is: 48,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,678.72 : 87,876 = 35,383.80 : x
  2. Step 2: Convert to fraction form
    63,678.72/87,876 = 35,383.80/x
  3. Step 3: Cross multiply
    63,678.72x = 87,876 × 35,383.80
  4. Step 4: Simplify right side
    63,678.72x = 3,109,386,808.80
  5. Step 5: Solve for x
    x = 3,109,386,808.80/63,678.72
  6. Step 6: Final answer
    x = 48,829.29

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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.