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Finding the Fourth Proportional to 61,986.80, 85,563.72 and 36,836

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Solution

The fourth proportional to 61,986.80, 85,563.72 and 36,836 is: 50,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,986.80 : 85,563.72 = 36,836 : x
  2. Step 2: Convert to fraction form
    61,986.80/85,563.72 = 36,836/x
  3. Step 3: Cross multiply
    61,986.80x = 85,563.72 × 36,836
  4. Step 4: Simplify right side
    61,986.80x = 3,151,825,189.92
  5. Step 5: Solve for x
    x = 3,151,825,189.92/61,986.80
  6. Step 6: Final answer
    x = 50,846.72

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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.