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Finding the Fourth Proportional to 43,340.49, 65,007.50 and 15,638.49

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Solution

The fourth proportional to 43,340.49, 65,007.50 and 15,638.49 is: 23,456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,340.49 : 65,007.50 = 15,638.49 : x
  2. Step 2: Convert to fraction form
    43,340.49/65,007.50 = 15,638.49/x
  3. Step 3: Cross multiply
    43,340.49x = 65,007.50 × 15,638.49
  4. Step 4: Simplify right side
    43,340.49x = 1,016,619,060.48
  5. Step 5: Solve for x
    x = 1,016,619,060.48/43,340.49
  6. Step 6: Final answer
    x = 23,456.57

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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.