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Finding the Fourth Proportional to 85,989.75, 118,676.80 and 51,998.49

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Solution

The fourth proportional to 85,989.75, 118,676.80 and 51,998.49 is: 71,764.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,989.75 : 118,676.80 = 51,998.49 : x
  2. Step 2: Convert to fraction form
    85,989.75/118,676.80 = 51,998.49/x
  3. Step 3: Cross multiply
    85,989.75x = 118,676.80 × 51,998.49
  4. Step 4: Simplify right side
    85,989.75x = 6,171,013,804.65
  5. Step 5: Solve for x
    x = 6,171,013,804.65/85,989.75
  6. Step 6: Final answer
    x = 71,764.53

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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.