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Finding the Fourth Proportional to 78,469.96, 108,244.74 and 48,234.28

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Solution

The fourth proportional to 78,469.96, 108,244.74 and 48,234.28 is: 66,536.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,469.96 : 108,244.74 = 48,234.28 : x
  2. Step 2: Convert to fraction form
    78,469.96/108,244.74 = 48,234.28/x
  3. Step 3: Cross multiply
    78,469.96x = 108,244.74 × 48,234.28
  4. Step 4: Simplify right side
    78,469.96x = 5,221,107,097.69
  5. Step 5: Solve for x
    x = 5,221,107,097.69/78,469.96
  6. Step 6: Final answer
    x = 66,536.38

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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.