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Finding the Fourth Proportional to 85,167.80, 127,578.90 and 48,188.60

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Solution

The fourth proportional to 85,167.80, 127,578.90 and 48,188.60 is: 72,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,167.80 : 127,578.90 = 48,188.60 : x
  2. Step 2: Convert to fraction form
    85,167.80/127,578.90 = 48,188.60/x
  3. Step 3: Cross multiply
    85,167.80x = 127,578.90 × 48,188.60
  4. Step 4: Simplify right side
    85,167.80x = 6,147,848,580.54
  5. Step 5: Solve for x
    x = 6,147,848,580.54/85,167.80
  6. Step 6: Final answer
    x = 72,185.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.