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Finding the Fourth Proportional to 72,654.38, 100,304.15 and 47,183.52

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Solution

The fourth proportional to 72,654.38, 100,304.15 and 47,183.52 is: 65,139.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,654.38 : 100,304.15 = 47,183.52 : x
  2. Step 2: Convert to fraction form
    72,654.38/100,304.15 = 47,183.52/x
  3. Step 3: Cross multiply
    72,654.38x = 100,304.15 × 47,183.52
  4. Step 4: Simplify right side
    72,654.38x = 4,732,702,631.69
  5. Step 5: Solve for x
    x = 4,732,702,631.69/72,654.38
  6. Step 6: Final answer
    x = 65,139.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.