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Finding the Fourth Proportional to 85,015.60, 127,523.40 and 75,830.20

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Solution

The fourth proportional to 85,015.60, 127,523.40 and 75,830.20 is: 113,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,015.60 : 127,523.40 = 75,830.20 : x
  2. Step 2: Convert to fraction form
    85,015.60/127,523.40 = 75,830.20/x
  3. Step 3: Cross multiply
    85,015.60x = 127,523.40 × 75,830.20
  4. Step 4: Simplify right side
    85,015.60x = 9,670,124,926.68
  5. Step 5: Solve for x
    x = 9,670,124,926.68/85,015.60
  6. Step 6: Final answer
    x = 113,745.30

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