Home / 85,769.82-118,368.58-51,786.57

Finding the Fourth Proportional to 85,769.82, 118,368.58 and 51,786.57

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Solution

The fourth proportional to 85,769.82, 118,368.58 and 51,786.57 is: 71,469.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,769.82 : 118,368.58 = 51,786.57 : x
  2. Step 2: Convert to fraction form
    85,769.82/118,368.58 = 51,786.57/x
  3. Step 3: Cross multiply
    85,769.82x = 118,368.58 × 51,786.57
  4. Step 4: Simplify right side
    85,769.82x = 6,129,902,753.97
  5. Step 5: Solve for x
    x = 6,129,902,753.97/85,769.82
  6. Step 6: Final answer
    x = 71,469.23

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1.5x scale

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.