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Finding the Fourth Proportional to 72,679.41, 100,269.12 and 53,604.97

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Solution

The fourth proportional to 72,679.41, 100,269.12 and 53,604.97 is: 73,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,679.41 : 100,269.12 = 53,604.97 : x
  2. Step 2: Convert to fraction form
    72,679.41/100,269.12 = 53,604.97/x
  3. Step 3: Cross multiply
    72,679.41x = 100,269.12 × 53,604.97
  4. Step 4: Simplify right side
    72,679.41x = 5,374,923,231.59
  5. Step 5: Solve for x
    x = 5,374,923,231.59/72,679.41
  6. Step 6: Final answer
    x = 73,953.86

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1.5x scale

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.