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Finding the Fourth Proportional to 61,147.77, 91,721.79 and 16,775.16

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Solution

The fourth proportional to 61,147.77, 91,721.79 and 16,775.16 is: 25,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,147.77 : 91,721.79 = 16,775.16 : x
  2. Step 2: Convert to fraction form
    61,147.77/91,721.79 = 16,775.16/x
  3. Step 3: Cross multiply
    61,147.77x = 91,721.79 × 16,775.16
  4. Step 4: Simplify right side
    61,147.77x = 1,538,647,702.74
  5. Step 5: Solve for x
    x = 1,538,647,702.74/61,147.77
  6. Step 6: Final answer
    x = 25,162.78

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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.