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Finding the Fourth Proportional to 43,599.71, 65,438.45 and 20,239.31

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Solution

The fourth proportional to 43,599.71, 65,438.45 and 20,239.31 is: 30,377.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,599.71 : 65,438.45 = 20,239.31 : x
  2. Step 2: Convert to fraction form
    43,599.71/65,438.45 = 20,239.31/x
  3. Step 3: Cross multiply
    43,599.71x = 65,438.45 × 20,239.31
  4. Step 4: Simplify right side
    43,599.71x = 1,324,428,974.27
  5. Step 5: Solve for x
    x = 1,324,428,974.27/43,599.71
  6. Step 6: Final answer
    x = 30,377.01

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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.