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Finding the Fourth Proportional to 72,115.92, 99,540.96 and 41,914.80

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Solution

The fourth proportional to 72,115.92, 99,540.96 and 41,914.80 is: 57,854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.92 : 99,540.96 = 41,914.80 : x
  2. Step 2: Convert to fraction form
    72,115.92/99,540.96 = 41,914.80/x
  3. Step 3: Cross multiply
    72,115.92x = 99,540.96 × 41,914.80
  4. Step 4: Simplify right side
    72,115.92x = 4,172,239,430.21
  5. Step 5: Solve for x
    x = 4,172,239,430.21/72,115.92
  6. Step 6: Final answer
    x = 57,854.62

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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.