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Finding the Fourth Proportional to 85,673.49, 118,283.01 and 55,059

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Solution

The fourth proportional to 85,673.49, 118,283.01 and 55,059 is: 76,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,673.49 : 118,283.01 = 55,059 : x
  2. Step 2: Convert to fraction form
    85,673.49/118,283.01 = 55,059/x
  3. Step 3: Cross multiply
    85,673.49x = 118,283.01 × 55,059
  4. Step 4: Simplify right side
    85,673.49x = 6,512,544,247.59
  5. Step 5: Solve for x
    x = 6,512,544,247.59/85,673.49
  6. Step 6: Final answer
    x = 76,015.86

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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.