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Finding the Fourth Proportional to 85,325.80, 127,815.90 and 48,346.60

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Solution

The fourth proportional to 85,325.80, 127,815.90 and 48,346.60 is: 72,421.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,325.80 : 127,815.90 = 48,346.60 : x
  2. Step 2: Convert to fraction form
    85,325.80/127,815.90 = 48,346.60/x
  3. Step 3: Cross multiply
    85,325.80x = 127,815.90 × 48,346.60
  4. Step 4: Simplify right side
    85,325.80x = 6,179,464,190.94
  5. Step 5: Solve for x
    x = 6,179,464,190.94/85,325.80
  6. Step 6: Final answer
    x = 72,421.99

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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.