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Finding the Fourth Proportional to 39,344.40, 59,034.03 and 20,619.96

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Solution

The fourth proportional to 39,344.40, 59,034.03 and 20,619.96 is: 30,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,344.40 : 59,034.03 = 20,619.96 : x
  2. Step 2: Convert to fraction form
    39,344.40/59,034.03 = 20,619.96/x
  3. Step 3: Cross multiply
    39,344.40x = 59,034.03 × 20,619.96
  4. Step 4: Simplify right side
    39,344.40x = 1,217,279,486.59
  5. Step 5: Solve for x
    x = 1,217,279,486.59/39,344.40
  6. Step 6: Final answer
    x = 30,939.08

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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.