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Finding the Fourth Proportional to 71,893.23, 99,222.21 and 41,278.38

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Solution

The fourth proportional to 71,893.23, 99,222.21 and 41,278.38 is: 56,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,893.23 : 99,222.21 = 41,278.38 : x
  2. Step 2: Convert to fraction form
    71,893.23/99,222.21 = 41,278.38/x
  3. Step 3: Cross multiply
    71,893.23x = 99,222.21 × 41,278.38
  4. Step 4: Simplify right side
    71,893.23x = 4,095,732,088.82
  5. Step 5: Solve for x
    x = 4,095,732,088.82/71,893.23
  6. Step 6: Final answer
    x = 56,969.65

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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.