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Finding the Fourth Proportional to 85,168.96, 127,656.56 and 51,815.50

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Solution

The fourth proportional to 85,168.96, 127,656.56 and 51,815.50 is: 77,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,168.96 : 127,656.56 = 51,815.50 : x
  2. Step 2: Convert to fraction form
    85,168.96/127,656.56 = 51,815.50/x
  3. Step 3: Cross multiply
    85,168.96x = 127,656.56 × 51,815.50
  4. Step 4: Simplify right side
    85,168.96x = 6,614,588,003.62
  5. Step 5: Solve for x
    x = 6,614,588,003.62/85,168.96
  6. Step 6: Final answer
    x = 77,664.31

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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.