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Finding the Fourth Proportional to 70,556.20, 105,806.72 and 25,566.88

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Solution

The fourth proportional to 70,556.20, 105,806.72 and 25,566.88 is: 38,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,556.20 : 105,806.72 = 25,566.88 : x
  2. Step 2: Convert to fraction form
    70,556.20/105,806.72 = 25,566.88/x
  3. Step 3: Cross multiply
    70,556.20x = 105,806.72 × 25,566.88
  4. Step 4: Simplify right side
    70,556.20x = 2,705,147,713.43
  5. Step 5: Solve for x
    x = 2,705,147,713.43/70,556.20
  6. Step 6: Final answer
    x = 38,340.33

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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.