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Finding the Fourth Proportional to 65,046.69, 97,542.45 and 20,661.57

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Solution

The fourth proportional to 65,046.69, 97,542.45 and 20,661.57 is: 30,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,046.69 : 97,542.45 = 20,661.57 : x
  2. Step 2: Convert to fraction form
    65,046.69/97,542.45 = 20,661.57/x
  3. Step 3: Cross multiply
    65,046.69x = 97,542.45 × 20,661.57
  4. Step 4: Simplify right side
    65,046.69x = 2,015,380,158.65
  5. Step 5: Solve for x
    x = 2,015,380,158.65/65,046.69
  6. Step 6: Final answer
    x = 30,983.59

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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.