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Finding the Fourth Proportional to 70,556.65, 105,672.61 and 40,901.29

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Solution

The fourth proportional to 70,556.65, 105,672.61 and 40,901.29 is: 61,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,556.65 : 105,672.61 = 40,901.29 : x
  2. Step 2: Convert to fraction form
    70,556.65/105,672.61 = 40,901.29/x
  3. Step 3: Cross multiply
    70,556.65x = 105,672.61 × 40,901.29
  4. Step 4: Simplify right side
    70,556.65x = 4,322,145,700.23
  5. Step 5: Solve for x
    x = 4,322,145,700.23/70,556.65
  6. Step 6: Final answer
    x = 61,257.81

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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.