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Finding the Fourth Proportional to 72,107.26, 99,500.90 and 41,893.85

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Solution

The fourth proportional to 72,107.26, 99,500.90 and 41,893.85 is: 57,809.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,107.26 : 99,500.90 = 41,893.85 : x
  2. Step 2: Convert to fraction form
    72,107.26/99,500.90 = 41,893.85/x
  3. Step 3: Cross multiply
    72,107.26x = 99,500.90 × 41,893.85
  4. Step 4: Simplify right side
    72,107.26x = 4,168,475,818.75
  5. Step 5: Solve for x
    x = 4,168,475,818.75/72,107.26
  6. Step 6: Final answer
    x = 57,809.38

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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.