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Finding the Fourth Proportional to 71,899.80, 99,222.12 and 41,703

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Solution

The fourth proportional to 71,899.80, 99,222.12 and 41,703 is: 57,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,899.80 : 99,222.12 = 41,703 : x
  2. Step 2: Convert to fraction form
    71,899.80/99,222.12 = 41,703/x
  3. Step 3: Cross multiply
    71,899.80x = 99,222.12 × 41,703
  4. Step 4: Simplify right side
    71,899.80x = 4,137,860,070.36
  5. Step 5: Solve for x
    x = 4,137,860,070.36/71,899.80
  6. Step 6: Final answer
    x = 57,550.37

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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.