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Finding the Fourth Proportional to 72,937.38, 100,640.79 and 41,107.62

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Solution

The fourth proportional to 72,937.38, 100,640.79 and 41,107.62 is: 56,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,937.38 : 100,640.79 = 41,107.62 : x
  2. Step 2: Convert to fraction form
    72,937.38/100,640.79 = 41,107.62/x
  3. Step 3: Cross multiply
    72,937.38x = 100,640.79 × 41,107.62
  4. Step 4: Simplify right side
    72,937.38x = 4,137,103,351.82
  5. Step 5: Solve for x
    x = 4,137,103,351.82/72,937.38
  6. Step 6: Final answer
    x = 56,721.30

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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.