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Finding the Fourth Proportional to 99,046.80, 136,614.60 and 61,333.20

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Solution

The fourth proportional to 99,046.80, 136,614.60 and 61,333.20 is: 84,596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,046.80 : 136,614.60 = 61,333.20 : x
  2. Step 2: Convert to fraction form
    99,046.80/136,614.60 = 61,333.20/x
  3. Step 3: Cross multiply
    99,046.80x = 136,614.60 × 61,333.20
  4. Step 4: Simplify right side
    99,046.80x = 8,379,010,584.72
  5. Step 5: Solve for x
    x = 8,379,010,584.72/99,046.80
  6. Step 6: Final answer
    x = 84,596.48

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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.