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Finding the Fourth Proportional to 72,372.96, 107,917.65 and 67,546.98

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Solution

The fourth proportional to 72,372.96, 107,917.65 and 67,546.98 is: 100,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,372.96 : 107,917.65 = 67,546.98 : x
  2. Step 2: Convert to fraction form
    72,372.96/107,917.65 = 67,546.98/x
  3. Step 3: Cross multiply
    72,372.96x = 107,917.65 × 67,546.98
  4. Step 4: Simplify right side
    72,372.96x = 7,289,511,346.20
  5. Step 5: Solve for x
    x = 7,289,511,346.20/72,372.96
  6. Step 6: Final answer
    x = 100,721.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.