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Finding the Fourth Proportional to 70,399.54, 105,898.97 and 63,815.43

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Solution

The fourth proportional to 70,399.54, 105,898.97 and 63,815.43 is: 95,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,399.54 : 105,898.97 = 63,815.43 : x
  2. Step 2: Convert to fraction form
    70,399.54/105,898.97 = 63,815.43/x
  3. Step 3: Cross multiply
    70,399.54x = 105,898.97 × 63,815.43
  4. Step 4: Simplify right side
    70,399.54x = 6,757,988,466.65
  5. Step 5: Solve for x
    x = 6,757,988,466.65/70,399.54
  6. Step 6: Final answer
    x = 95,994.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.