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Finding the Fourth Proportional to 61,918.68, 85,469.58 and 36,768

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Solution

The fourth proportional to 61,918.68, 85,469.58 and 36,768 is: 50,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.68 : 85,469.58 = 36,768 : x
  2. Step 2: Convert to fraction form
    61,918.68/85,469.58 = 36,768/x
  3. Step 3: Cross multiply
    61,918.68x = 85,469.58 × 36,768
  4. Step 4: Simplify right side
    61,918.68x = 3,142,545,517.44
  5. Step 5: Solve for x
    x = 3,142,545,517.44/61,918.68
  6. Step 6: Final answer
    x = 50,752.79

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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.