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Finding the Fourth Proportional to 70,808.33, 106,212.49 and 26,438.54

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Solution

The fourth proportional to 70,808.33, 106,212.49 and 26,438.54 is: 39,657.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.33 : 106,212.49 = 26,438.54 : x
  2. Step 2: Convert to fraction form
    70,808.33/106,212.49 = 26,438.54/x
  3. Step 3: Cross multiply
    70,808.33x = 106,212.49 × 26,438.54
  4. Step 4: Simplify right side
    70,808.33x = 2,808,103,364.80
  5. Step 5: Solve for x
    x = 2,808,103,364.80/70,808.33
  6. Step 6: Final answer
    x = 39,657.81

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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.