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Finding the Fourth Proportional to 61,155.72, 91,716.93 and 16,771.91

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Solution

The fourth proportional to 61,155.72, 91,716.93 and 16,771.91 is: 25,153.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,155.72 : 91,716.93 = 16,771.91 : x
  2. Step 2: Convert to fraction form
    61,155.72/91,716.93 = 16,771.91/x
  3. Step 3: Cross multiply
    61,155.72x = 91,716.93 × 16,771.91
  4. Step 4: Simplify right side
    61,155.72x = 1,538,267,636.85
  5. Step 5: Solve for x
    x = 1,538,267,636.85/61,155.72
  6. Step 6: Final answer
    x = 25,153.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.